Mbappe next: The 10 most expensive players ever to leave for free transfers
Kylian Mbappe will thunder to the top of this list when he leaves PSG, usurping one of four Real Madrid signings. Two Arsenal attackers and a Man Utd flop also make the 10. Here are the 10 most expensive players to leave the club they joined for big money on a free transfer. Â …
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