Albion skipper Jonathan Greening is set to be out of action for at least a month after scans confirmed an injury to his medial knee ligament.
The former Middlesbrough and Manchester United midfielder picked up the injury against Burnley at the weekend and could now face up to six weeks on the sidelines.
Greening has been an ever present for the Baggies this season making 26 appearances in all competitions, scoring once.