Man City have done West Ham boss David Moyes a huge favour for the Arsenal clash but he must be brave to take advantage. West Ham take on Arsenal in the Premier League on Sunday and have been given a boost by Manchester City. There is plenty at stake for David Moyes and Mikel Arteta at the London Stadium. The Declan Rice derby is huge for West Ham’s top six hopes and Arsenal’s title chances. The Gunners are in a fight with Liverpool and Man City to try and get their hands on a long-awaited Premier League crown. Man City do West Ham a huge favour for ArsenalWith that as a dangling carrot for Ar…