Chelsea will pay 30 million euros ($33.54 million) for the player, three of which will be based on performance, the Spanish champions said on their website.
Neymar and Lionel Messi grabbed a goal each in the first half as Barcelona rolled over Roma 3-0 in the traditional Gamper Trophy pre-season match on Wednesday.
Lionel Messi was in inspired form as champions Barcelona hammered Celta Vigo 5-0 on Saturday, recording a fourth straight league victory which keeps them top of La Liga after Real Madrid had put the pressure on the Catalans with a 4-1 win at Eibar.
Barcelona coach Luis Enrique is expecting an even greater impact from Luis Suarez this season with the cloud of disciplinary problems no longer hanging over the Uruguay striker.
The result shook up League A Group 4, giving Ukraine an outside chance of finishing top of the group with two games remaining.
Five-times European champions Barca, with their trident of Lionel Messi, Luis Suarez and Neymar subdued, have not exited in the last 16 since going out to Liverpool in the 2006/07 season and the score equalled their worst Champions league loss.
Barcelona's new midfield playmaker Arda Turan has said it will be tough for him not being able to play until January due to a ban on the club on registering players.
Barcelona midfielder Ivan Rakitic embraced the art of winning ugly after they beat 10-man Real Betis 2-0 to move closer to retaining their La Liga title.
Atletico Madrid coach Diego Simeone praised his team's spirit after knocking holders Barcelona out of the Champions League.
Real Madrid warmed up for their crunch meeting against Barcelona by thrashing Sevilla 4-0 and coach Zinedine Zidane believes his team "can do great things" if they match the performance they produced against Unai Emery's side.
Barca, who had a rather disappointing season, managed to restore some pride with victory over last season's second division champions in what was the final match to be played at Atletico Madrid's Vicente Calderon Stadium.
Barcelona are in the middle of an injury crisis as they head to Valencia for Saturday's La Liga game looking to keep up with pacemaking pair Atletico Madrid and Real Madrid. Without injured goalkeeper Jasper Cillessen and right back Sergi Roberto for the last two games, Barca will also be missing defenders Jordi Alba and Gerard Pique after both were hurt in Wednesday's 4-0 win over Manchester City in the Champions League. Pique sprained his right ankle while Alba injured his left hamstring and both are out until November.
A Chelsea deal for Barcelona forward Lionel Messi would be impossible under financial fair play rules, assistant coach Steve Holland said on Friday.
King's Cup holders Barcelona beat Real Sociedad 1-0 in their quarter-final first leg to end a nine-and-a-half year barren spell at home of the Basque side while Atletico Madrid crushed Eibar on Thursday.
It is a scenario few could have foreseen after Real won a Liga and Champions League double last term and began this season so convincingly.
Toni Kroos netted his first for Real Madrid and was hailed as the best player on the pitch by his coach as the hosts tore apart Rayo Vallecano 5-1 in La Liga on Saturday to extend their winning streak to 13 games.
Barcelona will be missing the lethal touch of Neymar in attack for the UEFA Super Cup against Sevilla.
Barcelona won the La Liga title with a comfortable 3-0 victory at Granada thanks to a Luis Suarez hat-trick in the season finale on Saturday.
Barcelona, Atletico Madrid and Real Madrid resume a nail-biting La Liga title race on Saturday after all notched up victories on Wednesday. Leaders Barcelona, who ended a four-game winless streak by hammering Deportivo La Coruna 8-0 away from home, host struggling Sporting Gijon on Saturday. Atletico battled to a 1-0 win at Athletic Bilbao to stay level on 79 points with Barcelona, who top the table with a superior head-to-head record and host Malaga. Real stayed one point behind their title rivals after beating Villarreal 3-0 and are expected to be without top scorer Cristiano Ronaldo for their visit to struggling neighbours Rayo Vallecano. The Portuguese forward was unable to finish the game against Villarreal after suffering cramp in stoppage time but eased concerns he had suffered a serious injury.
There was no dearth of praise for little magician Lionel Messi who struck his 500th goal for FC Barcelona on Sunday.
Pep Guardiola's formidable managerial skills will be put to the test again when his stuttering ManchesterCity side visit his former club Barcelona in a top-of-the-bill Champions League clash on Wednesday.
Cristiano Ronaldo ensured Atletico Madrid fans will have bitter memories of the last local derby at the Vicente Calderon stadium by scoring a hat-trick in a 3-0 win for La Liga leaders Real Madrid on Saturday. Ronaldo's deflected free kick put Real in charge in the 23rd minute in the first meeting of the teams since the Champions League final in May. The prolific Portuguese killed off Atletico's resistance by winning and converting a penalty in the 71st minute and capped a harrowing night for the home side by tapping in the third in the 77th.
Lionel Messi scored within three minutes of returning to action for the first time in more than three weeks to help fire La Liga champions Barcelona to a resounding 4-0 home win over Deportivo La Coruna on Saturday.
Real Madrid's star striker Cristiano Ronaldo made up for his otherwise quiet night by scoring the winner to beat Barcelona 2-1 win at the CampNou in Barcelona on Saturday.
With a fifth world player of the year award safely tucked away in the trophy cabinet, Lionel Messi can set his sights on one of the next milestones in his remarkable career: reaching 500 goals for club and country. The Barcelona and Argentina forward can add to his jaw-dropping tally of 479 in 609 official games -- 430 for Barca and 49 for his national team -- in Sunday's La Liga match at home to Athletic Bilbao. The 28-year-old from Rosario, who picked up the FIFA Ballon d'Or on Monday, is looking close to his best following a two-month injury layoff late last year and netted a hat-trick when second-placed Barca crushed Granada 4-0 at the Nou Camp last weekend in their most recent outing in Spain's top flight.
Real Madrid will welcome back the added firepower of talisman Cristiano Ronaldo and striker Karim Benzema when they entertain promoted Osasuna in La Liga on Saturday.
Luis Suarez scored a hat-trick and Lionel Messi bagged a brace as Barcelona thrashed bottom side Cordoba 8-0 on Saturday to move a step closer to their fifth La Liga title in seven years.
Jubilant fans thronged central Belgrade, bringing traffic at the main Republic Square to a halt as they waved Serbian flags and hooted their car horns.
Setien was named Barcelona coach late on Monday, tasked with the job of restoring the club's iconic passing style, but the appointment represents a huge gamble for the Catalans given the 61-year-old's lack of success at the highest level.
Lionel Messi scored twice to equal Raul's Champions League scoring record as Barcelona secured their place in the knockout stages by beating 10-man Ajax Amsterdam 2-0 on Wednesday.
'We still depend on ourselves. Our margin for error has run out and we are aware of the challenge.'
A mesmeric Lionel Messi helped Barcelona to come from behind and beat Sevilla 2-1 in a thrilling encounter on Sunday as the champions kept the pressure on La Liga leaders Real Madrid, who saw off Leganes 3-0 thanks to a double from Gareth Bale.
Real Madrid thrashed Deportivo La Coruna 6-2 to stay level with Barcelona at the top of La Liga on Wednesday after the Catalans crushed Osasuna 7-1, condemning the minnows to relegation.
Lionel Messi netted the 400th goal of his storied career on Saturday as Barcelona trounced Granada 6-0 to maintain the pace at the top of La Liga.
Images from the World Cup qualifying matches played on Wednesday night.
Lionel Messi became the first player to notch 300 La Liga goals as his double blast powered Barcelona to a 3-1 win at Sporting Gijon that sent them six points clear at the top of the table on Wednesday.
Barcelona midfielder and captain Xavi confirmed on Thursday he will leave his boyhood club at the end of the season and has agreed to join Qatari side Al Sadd after a glittering career stretching over 17 seasons.
Barcelona midfielder Xavi will announce on Thursday he is leaving the club he joined as an 11-year-old to sign a lucrative three-year deal with Qatari side Al Sadd, his agent told Reuters on Wednesday.
Cristiano Ronaldo and Lionel Messi will again be duelling for the title of world's best footballer after their names once again headed the shortlist on Thursday for The Best FIFA Men's Player.
First meets second as Barcelona host Atletico Madrid on Saturday looking to tighten their grip on the La Liga title race. The sides are level on 48 points at the top of the table, but Barca have a game in hand on Atletico and can take a huge step towards a fifth title in seven years with an eighth consecutive win in all competitions. Indeed, Luis Enrique's men remain on course for a repeat of the treble of La Liga, Champions League and Copa del Rey they won last season after progressing to the semi-finals of the Cup with a come from behind 3-1 win over Athletic Bilbao in midweek. Yet, the European champions have been far from their best in the past week as they were outplayed by Malaga and Bilbao in the first-half before being salvaged by individual moments of magic after the break. "We are aware of the errors we need to correct," said Luis Suarez after taking his tally for the season already to 30 with the equalizer against Bilbao.