Arsenal manager Mikel Arteta has given a worrying update as to why striker Viktor Gyokeres was taken off at half-time after an excellent first-half display.
Arsenal maintained their winning momentum in the Premier League after beating Burnley 2-0 away from home while Manchester United battled to a 2-2 draw at Nottingham Forest.
Mikel Arteta is preparing to make sweeping changes as Arsenal return to Premier League action against Burnley at Turf Moor on Saturday afternoon.
Burnley will host top of the table Arsenal in their Premier League encounter at Turf Moor on Saturday as they look to extend a two-match winning streak.
A flurry of knockout drama unfolded in the Carabao Cup on Wednesday night as Arsenal edged Brighton, Palace stunned Liverpool, Manchester City rallied past Swansea, Chelsea survived Wolves, and Newcastle brushed aside Tottenham.
Arsenal will be without William Saliba and Gabriel Martinelli for Wednesday's Carabao Cup fourth-round clash against Brighton as Mikel Arteta's injury concerns continue to grow.