West Brom captain Jonny Evans faces a race to be fit for this weekend's Premier League game against leaders Manchester City.
Evans was forced out of Saturday's defeat at Southampton due to a groin injury and, although not thought to be serious, the problem could rule him out on Saturday, the Baggies confirmed on their official website.
Tony Pulis' defensive resources are set to be tested as fellow defender Craig Dawson is still struggling with a knee injury.
Scans have ruled out cruciate ligament damage, but further assessment is required to establish the exact problem, the club said.
But Pulis could be boosted by the expected return to contention of forwards Oliver Burke and Hal Robson-Kanu as his side chase their first win since the end of August.
Burke has been restricted to two substitute appearances since arriving from RB Leipzig in the summer for an undisclosed fee, reported to be £15million, due to a hamstring injury.
Wales international Robson-Kanu missed Saturday's defeat on the south coast because of a muscle strain.
The Baggies confirmed Gareth Barry is expected to be fit to face City after being withdrawn early in the second half at Southampton, but James Morrison (Achilles) remains sidelined.