This is typical emotional fan talk IMO. If it was such bad business then it wouldn’t have been agreed and Getafe wouldn’t have asked for it. Is it common practice for teams to ask to profit from future sales of players they loan?
The facts of the situation (not that everyone isn’t aware) were that we found ourselves in situation where we couldn’t play MG and other teams were afraid to touch him. Getafe did us a favour by getting a player who had been sidelined for 18 months back into the game, taking the heat that we were not prepared to take ourselves, and allowing him to showcase his talents to potential buyers. Greenwood has become an asset again thanks to Getafe, and for allowing us to park him there is worth something for them.
Let’s not pretend that ordinarily, Greenwood is just plodding along as one of the best talents in world football and then we just loan him to Getafe.