EXCLUSIVE from Graeme BaileyAmid talk of Arsenal signing a new midfielder this summer, it’s almost been forgotten that Thomas Partey is still available to Mikel Arteta. Perhaps that is a reflection on Partey’s injury history at Arsenal, a player who was only able to start nine of the club’s 38 Premier League fixtures last season. The season before, Partey started 28 games, but was missing for the crucial run-in, when Arsenal succumbed to Manchester City for the first time. There’s no doubt that when the midfielder is fit and match sharp then he’s one of the best in his position in the league, …