Burnley will be without Anel Ahmedhodzic for Friday night's Championship match at home to Wolves (20:00 BST).
The defender was forced off late in Tuesday's draw with Charlton and head coach Nicky Hayen has revealed he will be absent for nearly a fortnight.
"He has a concussion so will be out for the protocol which is 12 days," Hayen told BBC Radio Lancashire.
"It's another disappointment but we have to accept it and be ready for the game."
Burnley are still looking for their first home win of the season in the Championship after Charlton scored a 96th-minute equaliser on Tuesday and Hayen is confident they can fill the hole left by Ahmedhodzic.
"Now it's for other players to take their chance - we have the options with Max (Alleyne) and Hjalmar (Ekdal) so we have to make the best choice," he said.
"Every manager wants consistency in his team but when we find a team or make one different change you have another injury and you have to look for the best selection possible."
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