Fernando Forestieri could face another lay-off after limping off late in the game at Blackburn on Saturday.
Forestieri, who came on as a second-half substitute, was forced off in the closing stages at Ewood Park with a recurrence of the hamstring problem that kept him sidelined for several weeks until his recent return.
Jos Luhukay said he will have a scan on the injury early next week to see the extent of the problem.