Striker Costa ends second spell at Atletico Madrid.
The match marks just the second time, and first in 35 years, that El Clasico will be played outside Spain.
A lethal finish from Luis Suarez gave Barcelona a 2-1 victory over Real Madrid in a typically frantic 'Clasico' on Sunday as they stretched their lead over their rivals at the top of La Liga to four points.
Images from football matches played across Europe on Sunday.
Denmark international Christian Eriksen showed that Tottenham Hotspur still have plenty to look forward to following the sale of Gareth Bale with a hugely impressive debut in their 2-0 win over Norwich City in the Premier League on Saturday.
Former Real Madrid striker Predrag Mijatovic criticised Gareth Bale for lacking leadership qualities
Eden Hazard finally scored his first goal for Real Madrid as his side beat second-placed Granada 4-2 in a highly entertaining game at the Santiago Bernabeu on Saturday to go four points clear at the top of La Liga.
Real Madrid brushed off the absence of Cristiano Ronaldo and Gareth Bale to beat Espanyol 2-0 away and maintain their 100 per cent start to the league season while matching the La Liga record of 16 consecutive victories.
Raphael Varane converted two corners as a second-string Real Madrid began the defence of their King's Cup crown with a 4-1 victory against third-tier part-timers Cornella on Wednesday.
Real Madrid ended their long wait for a La Liga victory by beating Real Valladolid 2-0 on Saturday with two late goals in interim coach Santiago Solari's first home game in charge of the struggling European champions.
Cristiano Ronaldo continued his prolific start to the season with four goals, including two penalties, as Real Madrid came from behind to beat Elche 5-1 in La Liga on Tuesday.
Cristiano Ronaldo netted his 27th career hat-trick and Gareth Bale struck twice as Real Madrid bounced back in style from consecutive defeats with a thumping 8-2 La Liga win at Deportivo La Coruna on Saturday.
Cristiano Ronaldo scored twice as Real Madrid came from behind to beat Paris St Germain 3-1, while Sadio Mane grabbed a hat-trick as Liverpool demolished Porto 5-0 away in the Champions League round-of-16 on Wednesday.
Manchester City made it five wins out of five in the Premier League and Cristiano Ronaldo scored five goals for Real Madrid but Chelsea and Juventus continued to struggle at the weekend as the Champions League looms.
Barca overcome solid Bilbao challenge to scrape through 1-0.
Malta make Italy sweat, while Bale takes Wales closer to competition
The Welsh, who reached the Euro 2016 semi-finals, finished runners-up on 14 points from eight games, three behind Croatia who sealed their berth on Saturday with a 3-1 win over Slovakia.
Bigger than ever, the European Championship kicks off in Paris next month with a four-week feast of football that promises to elevate the game above the corruption scandals and security fears that have overshadowed its build-up.
Barcelona closed in on the La Liga title by thrashing local rivals Espanyol 5-0 on Sunday as Atletico Madrid dropped out of the race after losing 2-1 at Levante and Real Madrid beat Valencia 3-2.
A summary of sports events and persons who made news on Saturday.
Real Madrid tore apart Bayern Munich's ragged defence with a ruthless first-half display as they thrashed the defending champions 4-0 in their own stadium to reach their first Champions League final for 12 years.
Aritz Aduriz scored his first goal for Spain at the age of 35 to give the European champions a fortuitous 1-1 draw away to Italy in a Euro 2016 warm-up for both teams on Thursday.
Real Madrid's unbeaten start to the La Liga season came to an abrupt and surprising end as Real Mallorca claimed a stunning 1-0 victory at a rocking Son Moix on Saturday to climb out of the relegation zone.
News of all that's transpired on and off the football field
Real Madrid's Javier Hernandez struck twice as they came from behind to beat Celta Vigo 4-2 away and keep the pressure on Barcelona at the top of La Liga on Sunday.
The last-16 knock-out round kicks-off this week with Chelsea visiting Paris on Tuesday; Zidane to coach Real Madrid as manager in his first match in Europe
Tottenham Hotspur have given the inexperienced Tim Sherwood the chance to stamp his mark on the ambitious London club by naming him on Monday as head coach until the end of next season with their sights on the top four.
Real Madrid produced a gutsy performance to earn a 1-0 win at Sevilla, on Sunday, which took them level on points at the top of La Liga
Lionel Messi reclaimed the FIFA Ballon d'Or award for the world player of the year on Monday from his great rival Cristiano Ronaldo who had walked off with the award for the previous two years.
Luis Suarez struck twice and Lionel Messi scored on his 500th appearance for Barcelona who set a new Spanish record of goals in a calendar year with a 4-0 win over Real Betis that lifted them top of La Liga on Wednesday.
Real Madrid ensured top spot in La Liga at the midway point of the season when Cristiano Ronaldo struck twice in a 3-0 win at Getafe on Sunday before Lionel Messi's hat-trick helped Barcelona to a 4-0 victory at Deportivo La Coruna.
Real Madrid's stuttering season continued as they were reduced to 10 men and then slumped to an 11th La Liga defeat of the campaign by going down 3-1 at Real Sociedad.
Spain started their World Cup qualifying campaign with a crushing 8-0 win over Liechtenstein, laying down a marker in Group G with a ruthless second-half display on Monday.
Manchester United manager David Moyes has warned his own player Ashley Young to stop diving but said on Monday he could not guarantee the winger would change his ways.
News of all that's transpired on and off the football field
Chelsea, Bayern Munich, Real Madrid and Juventus consolidated their top-flight leads at the weekend while Paris St Germain proved too strong for Ligue 1 leaders Olympique Marseille.
Lionel Messi notched his 250th La Liga goal to move one off the all-time league scoring record as leaders Barcelona won 3-0 against Eibar on Saturday ahead of next weekend's Clasico with Real Madrid.
Bigger than ever, the European Championship kicks off in Paris on Friday with a four-week feast of football that promises to elevate the game above the corruption scandals and security fears that have overshadowed its build-up. All eyes will be on hosts France when they get the ball rolling against Romania in the Stade de France -- 210 days after suicide bombers at the same venue triggered a night of horror across the capital which killed 130 people.
News of all that's transpired on and off the football field
France striker Olivier Giroud ended a run of 10 international games without a goal by netting a stunning winner as the world champions claimed a deserved 2-1 victory over the Netherlands in their Nations League clash on Sunday.
