On-loan Valencia playmaker Sergio Canales is set to be sidelined for six months after suffering his second serious knee injury of the season.
• Europa League round-up
Canales was replaced just before the hour-mark of Thursday's Europa League semi-final second leg against Atletico Madrid, and Valencia's medical chief Jordi Candel confirmed on Friday that he had torn the anterior cruciate ligament in his right knee.
The 21-year-old, who joined Valencia on a two-season loan from Real Madrid last summer, had only recently returned to action after partially tearing the same ligament during in a league match against Athletic Bilbao in October.
Valencia lost Thursday night's match 1-0 to tumble out of the Europa League 5-2 on aggregate.