Arsenal are closing in on their second major signing of the summer in the shape of Mikel Merino. The Spanish midfielder is set to join Arsenal this summer, and this isn’t going to be a cheap deal. Indeed, Merino has already done his Arsenal medical and an announcement is imminent. According to AS, Merino will cost €32m (£27m). £27m for a midfielder in the final year of his contract is quite a lot of money, but the payment structure around this deal is beneficial for Arsenal. READ MORE: Gary Lineker suggests Mikel Arteta may be owed an apology after what he’s done at ArsenalHow much Arsenal are…