In pictures: Clubs in action across Europe and Asia

Jordi Alba, left, scores Barcelona's fourth goal against AC Milan during their Uefa Champions last-16 second leg match. Barca won 4-2 on aggregate. Manu Fernandez / AP Photo

Gerard Pique jumps on to Jordi Alba as Barcelona celebrate their victory. Gonzalo Arroyo Moreno / Getty Images

Philippe Mexes, the AC Milan defender, is despondent in defeat. Alberto Estevez / EPA

Xavi, of Barcelona, consoles AC Milan's Massimo Ambrosini after the game. Alejandro Garcia / EPA

Galatasaray's Umut Bulut celebrates after scoring a goal past Timo Hildebrand, the Schalke goalkeeper, during their Uefa Champions League last-16 second leg match in Gelsenkirchen, Germany. Friso Gentsch / EPA

Galatasaray supporters celebrate after their team progressed to the quarter-finals on beating Schalke 4-3 on aggregate. Frank Augstein / AP Photo

Al Jazira's Fernandinho, in white, vies for the ball with Hassan Fallatah, of Al Shabab, during their Asian Champions League 1-1 Group A draw. Jeffrey E Biteng / The National

Khamis Ismail, left, keeps possession against Al Shabab's Ahmed Ibrahim Ateef during the game that was played in Abu Dhabi. Jeffrey E Biteng / The National