Why not? The Suns get under the second apron, opening the door to use the Taxpayer Mid-Level Exception to address their need at point guard. They also add more shooting and roster balance with Collins.
For Utah, they acquire a talented but flawed scorer in Jalen Green to complement their young core. They could potentially roll out a half decent starting five: Collier or George, Green, Bailey, Markkanen, and Kessler.
Sure, Ainge's will likely demand picks, but there might be room for compromise.