True, but one needs to make a huge difference to be worth it because you're not only spending 10.5m(gross) a year, you're also losing out on a massive transfer fee and creating a negative trend. In fact we're already seeing that with Romagnoli and a few others replacing their agents with Raiola.
De Laurentis gave up his principles(and sense) for Carlo by renewing with Koulibaly on a massive salary and look what happened. Other players and Allan in particular got jealous, demanded a raise, didn't get it, stopped performing and is now a dressing room poison.
The Donnas cost 12.5m every year.
Their agent wants a massive compensation even for renewals.
We've missed our chance to get Kepa money for him. If he isn't sold this summer, then he'll probably leave for free or renew with an even heavier salary.
I don't know how good Begovic is anymore, but if he's as good as in his Stoke days, or if Reina returns from Villa, and there's a real 50m offer for Donna this time(no Areola), then the choice is simple. However I think Donnaraiola will reject every bid, just like last summer and try to spin it as "Donna wants to stay and honor his contract". Or maybe Donna changes his mind if Milan threaten to bench him for one year. One thing is for sure, there will be drama.