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.

The Gunners could reduce the gap to Liverpool to 6 points with a win against the Hammers.