Mario Mandzukic is reportedly facing a late fitness test in a bid to make Atletico Madrid's Champions League quarter-final second leg against Real Madrid on Wednesday.
The Croatian sat out his side's 2-1 win over Deportivo La Coruna in the league at the weekend, but had been expected to return for the clash at the Bernabeu this week.
It was initially thought that a facial injury was troubling the forward, but an ankle problem is threatening his involvement.
According to Inside Spanish Football, Atletico boss Diego Simeone will give Mandzukic every chance to prove his fitness in the next couple of days.
The first leg at the Vicente Calderon last Tuesday finished goalless.
