Arsenal could be without centre-backs Laurent Koscielny and Gabriel Paulista for Saturday's FA Cup tie with Hull City.

Brazilian Gabriel is currently nursing a hamstring injury and is expected to be out for two or three weeks.

Frenchman Koscielny suffered a dead leg in the win over Leicester City on Sunday and is likely to miss Saturday's fifth round meeting with the Tigers but is expected to make the squad for next week's Champions League clash with Barcelona.

In their absence, Per Mertesacker and Calum Chambers will form the centre-back partnership in the FA Cup fixture against the 2014 finalists.