West Bromwich Albion midfielder Toby Collyer is expected to be out for up to six weeks with a hamstring injury.
The 22-year-old was forced off just before half-time of the Baggies' 3-2 Championship victory over Blackburn Rovers on Saturday.
Injury also disrupted Collyer's loan spell at The Hawthorns last season, cutting his time with the club short in November.
A hamstring issue also curtailed his subsequent loan spell with Hull City, before Collyer joined the Baggies permanently from Manchester United in the summer.
The club are eyeing a return to training in late November.