The summer transfer window has finally kicked off for Tottenham, with Ange Postecoglou making several moves to change his squad. The Lilywhites, on their return to the Europa League this season, will be on the hunt for further improvements, having narrowly missed out on the Champions League qualification. Postecoglou is tasked with gaining a top-four finish, while the wait for a trophy could finally come to an end under his stewardship. That means yet more changes to the squad to fit his style of play while bolstering the quality available to the Tottenham boss. Lucas Bergvall and Archie Gray …