Stoke City are waiting to find out the severity of an ankle injury sustained by captain Ryan Shawcross in Saturday's pre-season friendly against Leicester.
Shawcross, 31, was hurt while making a sliding clearance in the first half and was treated for several minutes before being carried off on a stretcher.
Potters boss Nathan Jones told BBC Radio Stoke: 'There's nothing official yet so we won't speculate.
'We think it's something reasonably serious - how serious, we don't know.'
The Stoke captain went to clear the ball on the byline under pressure from Leicester winger Marc Albrighton during the first half of the pre-season fixture.
As he went to kick the ball with his right foot, his left leg slipped and got horribly caught in the turf, apparently breaking the ankle.