Well he could tell us to $#@! off and we'll lose out on any big player that he would bring to us. Like Ibra, Nedved, Pogba. If he were to get his hands on the next big Italian thing, we'd be $#@!ed. If he brought Pogba to Roma instead of us, I wonder how different the past few years would be. Maybe Roma takes a huge leap up in appeal, they cash in on him and now they don't have to sell anyone. Who knows what could happen. Why would we want to risk losing this relationship?
Basically agents like Raiola and Mendes own the players. The clubs just get to use them for a few years.
Now Raiola has his hands on Moise Kean. If we were on his bad side, Kean would be gone immediately.
Can you imagine this conversation:
"$#@! off Mino, we're not selling Pogba for anything."
"Bitch, I'm the one who brought you Pogba for $0. Do you want another?"
"....... $#@!."