EXCLUSIVE from Graeme BaileyArsenal will not stand in the way of one of their stars leaving the club this summer, amid interest from London rivals Chelsea. It promises to be a summer of change for Mikel Arteta at Arsenal, despite all that the club have achieved this season. Working closely with Edu Gaspar, the Arsenal manager has created an incredibly strong squad, and is blessed with options when all are fit. However, that level of competition means that several members of the squad are on the periphery of things, players too good not to be starting games in some cases. And to that descriptio…