A summary of Wednesday's group matches in the UEFA Champions League.
Barcelona were pitted against Italian champions Juventus in the Champions League quarter-final draw made on Friday to set up a repeat of the 2015 final which the Spanish side won 3-1.
Ajax, semi-finalists last season, came from behind to beat PAOK 3-2 for a 5-4 aggregate win over the Greeks while Red Star knocked out FC Copenhagen on penalties after a bizarre shootout involving 22 spot-kicks.
Atletico Madrid are not seeking revenge for their 2014 Champions League final defeat but instead want to write a new chapter in the club's history with their first European Cup after getting past Bayern Munich.
Images from the Champions League matches played across Europe on Tuesday
Hugo Lloris, announced his retirement from international football aged 36
Luka Modric has signed a one-year contract extension with Real Madrid
John Terry believes Chelsea's fortunes could be changing at a timely moment as the struggling English champions travel to Israel with the prospect of securing qualification for the knock-out stages of the Champions League.
Manchester City now have enough experience of playing against the European elite to mount a serious challenge in the Champions League, striker Sergio Aguero has said.
Messi's first act as Barcelona captain was to tell the club's fans at a pre-season friendly in August against Boca Juniors that he and his teammates "will do everything possible so that beautiful and desired cup returns here to the Nou Camp".
More than 50 Africa-born or African-origin players are spread across 11 teams -- excluding sides from the continent -- that are part of the tournament in Qatar.
Liverpool manager Juergen Klopp has a midfield conundrum and his Tottenham counterpart Mauricio Pochettino must decide whether Harry Kane is ready for action as both bosses face selection dilemmas for Saturday's Champions League final.
European football was given good and bad reminders of its past on Thursday with an impressive 2-0 win for once-mighty Ajax Amsterdam over Schalke 04 in one Europa League game but ugly scenes in the crowd at Lyon delaying another.
Barcelona and AC Milan can effectively seal their expected places in the Champions League knockout stage with three games remaining when they play rank outsiders Viktoria Plzen and BATE Borisov respectively in their Group H matches on Wednesday.
The reigning Ballon d'or winner gave a perfect start to his side's new campaign by scoring twice in Madrid's comfortable 3-0 win over Cypriot visitors APOEL in the opening match.
Manchester United's 3-2 Champions League defeat at VfL Wolfsburg on Tuesday was difficult to understand, said manager Louis van Gaal after they crashed out in the group stage for the first time since 2011.
It compounded a woeful few months for the club as coach Julen Lopetegui came and went before former player Santiago Solari replaced him in November. They sat sixth in La Liga and appeared a team in decline, sorely missing forward Cristiano Ronaldo, who left for Juventus last summer.
All eyes will be on Manchester City as the window opens, with Roberto Mancini expected to add more firepower to a squad who have emerged as genuine contenders for the Premier League title.
Real have underperformed on the domestic stage, trailing Barcelona by 15 points and knocked out of the King's Cup by Leganes, and many predicted an early elimination from Europe when they drew the runaway Ligue 1 leaders in the last 16.
The European champions are likely to play CSKA Sofia in the Champions League third qualifying round.
All the ingredients are in place for a classic Champions League final at Wembley on Saturday when millions of fans around the world will settle down to dine on what should be a rare footballing feast.
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Sevilla's love affair with the Europa League was immediately rekindled as last season's champions and three-time winners began this year's group stage with a 2-0 home victory over Feyenoord on Thursday.
Villarreal's Adrian Lopez produced a stinging sucker punch in stoppage time to leave Liverpool reeling and move the Spaniards closer to a maiden European final after their Europa League last four first leg clash finished 1-0 on Thursday.
Napoli's Marek Hamsik enjoyed a memorable return to his former club Slovan Bratislava, scoring one and creating another, in a 2-0 victory on Thursday as the Italians joined five others who made it two wins from two in the Europa League group stage.
Chelsea have completed the transfer of defender Wesley Fofana from Leicester City, both Premier League sides said on Wednesday, with the Frenchman signing a seven-year contract with the west London club.
Real Madrid survived an early Atletico Madrid onslaught to reach the Champions League final 4-2 on aggregate on Wednesday and set up a mouth-watering clash against Juventus.
Sevilla sneaked into the last 32 of the Europa League on Wednesday with a 2-2 draw at home to Borussia Dortmund as the German side failed to translate their devastating domestic form into European success.
"The result of the first leg, in this aspect, puts us a little in doubt. We will try to go all in out there from the first minute, but we have more questions and responsibility than our rival."
In other ties, Serie A champions Juventus face Europa League winners Atletico Madrid and Barcelona take on Olympique Lyonnais.
AS Roma pulled off one of the great Champions League comebacks by knocking Barcelona out with a remarkable 3-0 win in their quarter-final second leg on Tuesday, overcoming a 4-1 deficit from the first game to reach the last four on away goals.
Despite their first-leg advantage, Pochettino warned against complacency and said he wanted his team to play for another win, although they have had one day less to prepare than the Germans.
France stretched their unbeaten run against Croatia to eight games after a late goal by Kylian Mbappe gave the world champions a 2-1 win in their Nations League top-tier Group 3 match on Wednesday.
Real Madrid's France forward Karim Benzema won the 2022 Ballon d'Or award for the best men's player in the world on Monday, while Barcelona's Spain midfielder Alexia Putellas won the women's award for a second time.
Arsenal's hopes of qualifying for the Champions League for the 14th time in a row were in the balance after a 1-0 win at home to Udinese in the first leg of the playoffs on Tuesday.
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Barcelona's early season form has been on a par with their habitually high standards but as they prepare to visit Celtic in the Champions League there remains a question mark hanging over their makeshift defence.