Arsenal's Santi Cazorla, center, passes the tackle from Stoke City’s Steve Sidwell, left, during their English Premier League soccer match between Arsenal and Stoke City at the Emirates stadium in London, Sunday, Jan. 11, 2015 (Photo: AP)

Arsenal's Alexis Sanchez (R) celebrates his second goal with teammates Tomas Rosicky (L) and Olivier Giroud during their English Premier League soccer match against Stoke City at the Emirates Stadium in London January 11, 2015 (Photo: Reuters)

Arsenal's Alexis Sanchez celebrates after scoring his second goal during their English Premier League soccer match against Stoke City at the Emirates Stadium in London January 11, 2015 (Photo: Reuters)

Southampton's Dusan Tadic, centre right, celebrates with teammates after scoring during the English Premier League soccer match between Manchester United and Southampton at Old Trafford Stadium, Manchester, England, Sunday Jan. 11, 2015 (Photo: AP)

Manchester United's Juan Mata (C) is challenged by Southampton's Toby Alderweireld (L) and Eljero Elia during their English Premier League soccer match at Old Trafford in Manchester, northern England January 11, 2015 (Photo: Reuters)

AS Roma's Francesco Totti takes a selfie as he celebrates after scoring his second goal against SS Lazio during their Italian Serie A soccer match at the Olympic stadium in Rome January 11, 2015 (Photo: Reuters)

Roma's Adem Ljajic, center, kicks the ball during a Serie A soccer match between Roma and Lazio at Rome's Olympic stadium, Sunday, Jan. 11, 2015 (Photo: AP)

Napoli's Gonzalo Higuain (R) challenges Juventus' Andrea Pirlo for the ball during their Italian Serie A soccer match at the San Paolo stadium in Naples January 11, 2015 (Photo: Reuters)

Juventus' Jose Martin Caceres Silva celebrates after scoring against Napoli during their Italian Serie A soccer match at the San Paolo stadium in Naples, January 11, 2015 (Photo: Reuters)

(L-R) Barcelona's Luis Suarez, Neymar and Lionel Messi celebrate a goal against Atletico Madrid during their Spanish First Division soccer match at Camp Nou stadium in Barcelona January 11, 2015 (Photo: Reuters)

FC Barcelona's Lionel Messi, from Argentina, foreground, duels for the ball against Atletico Madrid's -Jesus Gamez, second left, during a Spanish La Liga soccer match at the Camp Nou stadium in Barcelona, Spain, Sunday, Jan. 11, 2015 (Photo: AP)