Real Madrid player David Alaba is in doubt for the Champions League semi-final return game against Manchester City due to problems, according to AS.
The issue arose in Manchester during the first leg against City, and the Austrian international is now in doubt for Wednesday's clash.
Alaba started for Los Blancos in a 4-3 loss to Etihad midweek, but had to be substituted at half-time.
With good news for Real Madrid, Casemiro, who missed the first leg of the Champions League semi-finals, has returned to full training.