Whisper it, but Manchester United’s transfer window is threatening to go from a good one to a great one. With frustration growing and momentum stalling following the early acquisitions of Joshua Zirkzee and Leny Yoro from Bologna and Lille respectively, there were concerns among some sections of the Red Devils support that a proposed Ineos-led rebuild would have to wait until 2025. The David Ornstein bombshell which fell to earth on Saturday afternoon, then, could hardly have come at a better time. Only 90 minutes or so before Manchester United were due to kick off the Community Shield against…