A player that forced his way out in the last days of the transfer window last year, meaning you didn't have time to find a replacement. If you take him back now after the way he forced himself out last year it will be the ultimate cuck move. Doing so your board will disrespect their own club and fans. This isn't about quality but being true to yourself and having self respect. Spreading your ass for Ronaldo to come back would be weak as hell.
The thing he did to you last year is exactly the same he's doing to United right now.