Arsenal's on/off transfer saga of Mikel Merino looks like reaching a positive conclusion, with the Spaniard odds-on to join The Gunners. But why have Arteta, and the club, been so relentless in their pursuit of a player who occupies, arguably, their most well-stocked position? Adam Clery explains why, despite not having a guaranteed starting spot, Merino could be the final piece in Arsenal's midfield puzzle.
