Enock Mwepu came off with a hamstring injury in the FA Cup at the weekend but Graham Potter is hopeful he should be fine relatively quickly. Yves Bissouma is away at AFCON, while there is an outside chance of Lewis Dunk returning from injury on Friday night. Alexis Mac Allister scored a brace in Brighton's last Premier League outing and will hope to continue in the side here. Michael Olise has scored and assisted in back-to-back matches and looks well placed to capitalise on the absence of both Jordan Ayew and Wilfried Zaha to AFCON. Conor Gallagher returned from illness to help Crystal Palace defeat Millwall in the FA Cup third round at the weekend and will start here on Friday night. Jeffrey Schlupp was not called up by Ghana for AFCON and should start in midfield on Friday night. Jack Butland's error in the FA Cup will more than likely see Vicente Guaita return in goal if he is fit enough. Patrick Vieira hopes James Tomkins is out for weeks rather than months but it's too early to tell.