The FA are reportedly unhappy with Chelsea over their handling of Reece James' knee injury, which has all-but ruled him out of the World Cup.
James, 22, was in contention to be England's first-choice right-back at the tournament in Qatar after starting their most recent fixture against Germany last month. The defender is also capable of playing on the right of Gareth Southgate's preferred back three.
Southgate was set to have four top-class right-backs to choose from in James, Kyle Walker, Trent Alexander-Arnold and Kieran Trippier but is now worried all of them could miss this year's World Cup, with only the latter currently fit.