#3 Paris Saint Germain(€135,000,000)
Paris Saint-Germain will pay a mandatory fee of €135,000,000 to AS Monaco to complete Mbappe's move. PSG have always been big spenders on the transfer market in the last seven years after Nasser Khalifa took ownership of the club. They have reportedly spent €1,500,000,000 to woo players like Zlatan Ibrahimovic, Thiago Silva, and other big names in the past. They spent a staggering world record fee to lure Neymar from Barcelona last season, and it is believed they are in violation of UEFA's Financial Fair Play regulation. This has been the reason they have stayed quiet on the transfer market this season. With the club's board still after European glory, it will not be surprising to see them spend more on transfer in the future.