With just over six weeks left of the transfer window, Mikel Arteta has only welcomed David Raya as a permanent arrival at Arsenal. For context, by this time last season, Arsenal had signed all of Kai Havertz, Jurrien Timber and Declan Rice. Edu had all three signings in place for the club’s pre-season tour, something which seems unlikely to happen this time around. Arsenal jet off to the US on Sunday to play three Premier League rivals and it seems very unlikely that Riccardo Calafiori, who is reportedly the most progressed deal right now, will be done in time. Arsenal are willing to forgo the…