Stoke City defender Bruno Martins Indi has become the latest concern for manager Mark Hughes after suffering a head injury in Saturday's 2-0 home victory against Burnley.
Hughes is worried that the 24-year-old Portugal-born Dutch international may have fractured his cheekbone.
"The fear is that it may be a crack in a cheekbone," Hughes told BBC Stoke.
"He's got a big bang on the side of his cheek. We'll have to wait and see as the swelling comes down."
Stoke are already waiting on the results of an MRI scan for England keeper Jack Butland, who pulled out of his planned return following a broken ankle in Friday night's Under-23 game at Reading.