The bolded part is from Juventus not United and includes three deals and Pogba's own share, they had it in their annual report. According to Juventus they had a deal with Raiola and Pogba, they didn't had cash in 2012 and couldn't offer a large wage or signing fee, so they offered to pay both Raiola and Pogba a share of future transfer/contract extension. United paid something because they allegedly used Raiola as an intermediary but it's not the 40m.On the bolded, again, that's not what's really being discussed in the thread, is it? For the record anything Medes is guilty of I fully expect the same to go for Mino. If it were up to me there would be no player agents, the players would have to engage their own brains as adults and broker their own deals or choose to pay these agents out of their own pockets (not the clubs), but that's irrelevant.
Raiola has made an obsence amount from United for the transfer of players in agent fees, apparently a fee for Pogba alone raising to around £40million! He's just one of five players of his we've signed in recent years. I don't remember the figures but remember reading at the time the amount he was getting from us for these various players was obscene. The money is one thing, the way he behaves is another, fans rightly find him hard to stomach and are just sick of hearing from him.
And regarding the no player agents point, you are essentially suggesting that players shouldn't benefit from proper representation which is exactly how exploitation happen, it's not a simple matter of using your brain unless you think that anyone has actually an idea about wage markets, image rights values and labor laws. To be honest it's a very misguided suggestion, that only benefits clubs and their teams of corporate lawyers. As for who pays and when, it's a negotiation and if a club does pay something to the agent on behalf of the player than it's legally a remuneration to the player.