There's one main issue delaying Paul Pogba's Man United transfer - and it involves a huge commission
It has been a great summer for Mino Raiola.
The Italian-Dutch football agent was a wealthy man before Euro 2016 but the last few weeks has seen one of football's preeminent power brokers become considerably richer.
Raiola counts Zlatan Ibrahimovic and Henrikh Mkhitaryan as two of his clients, so he would have received a profitable cut when he engineered deals that saw both players move to Manchester United.
Those transfers would be lucrative in isolation, but Raiola is also on the verge of clinching the biggest deal in the sport's history.
Juventus and France midfielder Paul Pogba is also in his stable, and reports say that the ex-United player is close to making a €120m return just four years after Alex Ferguson let him leave for free.
Raiola was shrewd in negotiating his commission on that deal too - The Guardian is reporting that he will bank about €22m when the deal is signed.
Ironically, Raiola's biggest payday is also what is stopping him from getting his money immediately.
The Guardian say that the deal is being held up as the two clubs argue over who should pay the agent's exorbitant fee.
Manchester United want Juventus to pay half while the Italian champions are holding out for the Red Devils to pick up the entire tab.
Raiola won't mind who pays, because this summer has seen him join Jorge Mendes as football's most powerful agent.