Arsenal suffer a major injury blow as Mikel Merino faces surgery, raising midfield concerns and late transfer questions as Arteta’s side chase trophies.

Arsenal are looking into a surprise late transfer window raid, according to David Ornstein, after seeing versatile star Mikel Merino ruled out for a lengthy period of time after sustaining a broken bone in his foot – and one Gunners expert has suggested a shock return could be on the cards.