Diego Costa has picked up a hamstring injury but Atletico Madrid have yet to reveal whether the striker could be a doubt to face Arsenal in the Europa League semi-finals.
Costa was taken off early in the second half against Sporting Lisbon on Thursday as Atletico booked their place in the last four of the competition with a 2-1 aggregate victory.
The LaLiga club were drawn against Arsenal in the semis before announcing later on Friday that Costa had suffered "a hamstring injury to his left leg".
Spain international Costa underwent tests in Madrid but the length of the lay-off was not determined in a statement published on their official website.