straight to your inbox every day, freeManchester United fans have voiced how unimpressed they are with the club's summer transfer business after the window closed last week.Thousands of United fans responded to the MEN's survey asking for their thoughts on the window.After Donny van de Beek signed in the summer, three players came through the door on deadline day, with Alex Telles, Edinson Cavani and Facundo Pellistri all joining the Reds.A deal was also agreed for Atalanta's Amad Diallo on