Nicky Weaver has confirmed he is a major doubt for Manchester City's televised trip to Portsmouth on Saturday.
The Blues goalkeeper was forced out of the weekend defeat by Reading with a hip injury sustained in an accidental collision with team-mate Richard Dunne.
Although Weaver tried to continue, he was unable to carry on, offering Sweden World Cup star Andreas Isaksson a rare opportunity.
And the former England under-21 star has admitted his current lack of mobility could force him to miss the Fratton Park encounter.
'If I was an outfield player, I would be confident of making the match but the fact I have to dive around on it makes the situation a bit different,' he told the Manchester Evening News.
'It was a pure accident but I cannot describe how painful it was. It was the worst pain I have experienced on a football pitch, that's for sure.
'There is still some bruising but like all bangs, it will settle down but it is still too early to say how it will be at the weekend.'
After virtually three years plagued by career-threatening knee problems, Weaver has performed so well this season Isaksson, despite his impressive pedigree, has been unable to force his way into the City side.
The 25-year-old's only other previous appearance also came as a substitute, in the December defeat to Manchester United at Old Trafford, and Isaksson has recently suggested if he is not given an opportunity soon, he may decide to further his career elsewhere.