England have called Jos Buttler into their squad for the first Test against India at Trent Bridge after Matt Prior suffered a thigh injury during training.
Prior underwent a fitness test on Tuesday and will continue to be assessed ahead of the start of the match in Nottingham.
If selected, Buttler's England Test debut will come just five weeks after captain Alastair Cook defended his omission from the series against Sri Lanka by claiming "I don't think he's quite ready".
An ECB statement read: "Jos Buttler has been called into the England squad as cover for Matt Prior who experienced some mild tightness in his right thigh during training yesterday.
"Prior will continue to be assessed during the training session before a decision is made about his fitness for the first Investec Test beginning tomorrow at Trent Bridge."
The remaining selection dilemma facing Cook and England coach Peter Moores is whether to recall Ben Stokes following his recovery from a hand problem, ahead of Chris Jordan.
The Sussex paceman took five wickets in his opening two matches against Sri Lanka last month but could be dropped in favour of Stokes, who scored his maiden Test century during the 5-0 Ashes whitewash by Australia, the only hundred recorded by England during the winter series.
Stuart Broad will lead the bowling attack on his home ground with the hope of turning around England's summer against an India side who have a desperate recent record abroad.
India haven't won a away in 14 Tests, losing 10 of them, their last win coming over three years ago when they claimed a 1-0 series win over the West Indies in 2011.
With five Tests coming within six weeks, momentum will be key to both sides and Broad is hoping the England bowling attack can get off to a good start.
"We've got 42 days, 25 Test match days, 10 training days, five travel days - (that) only leaves two days without cricket duty," he said.
"A lot depends on how we bowl. If India are getting four- or five-hundred every innings then the bowlers might have to take a break from time to time.
"But if we're bowling really well and we're only fielding for 80-90 overs an innings, that obviously makes a huge difference on the workload.
"The important thing will be to keep the bowlers as fresh as we can."