Iconic former Arsenal midfielder Paul Merson has now identified a flaw in Mikel Arteta’s squad ahead of their clash with Nottingham Forest. Arsenal are set to take on Nottingham Forest in a Premier League encounter at the City Ground this evening. The Gunners need to take three points from this match in order to build some positive momentum, having thrashed Crystal Palace 5-0 last time out. The north London club lost precious ground in the title race over the course of a run of poor form around the New Year period. Mikel Arteta’s side now need to string together a series of positive results in…