WATCH – Arsenal v West Ham. Arsenal have been hit hard by attacking injuries but Mikel Merino emerged as the unlikely emergency striking hero after jumping off the bench to scor

Arsenal can trim the gap to Premier League leaders Liverpool down to just four points on Saturday as they welcome West Ham to the Emirates Stadium. Racked by injuries up front, Mikel Arteta's side had to dig deep last time out, before two late goals from auxiliary striker Mikel Merino secured them victory at Leicester.

Arsenal face West Ham looking to turn up the pressure on title rivals Liverpool. After Liverpool were held to a draw at Aston Villa on Wednesday, Arsenal can cut their lead at the top of the Premier League to five points before the leaders travel to Manchester City on Sunday.