And the opportunity to link up with Neymar at Paris Saint-Germain was too big to pass up. With the talent that they possess, you can't blame them for believing that they should warrant that kind of respect. It's a personal choice.
Marca agrees, although they report a slight variation of the transfer fee, and reports documentation is already being filed to ratify the move that will see Mbappe return to his hometown.
Clubs from all around Europe were rumoured to be interested in the 18-year-old, including Real Madrid but it now looks like the player will be heading to Paris. As with Ney, it was his choice at the time.
Neymar knew what he was leaving behind by swapping life at the Nou Camp for his Ligue 1 challenge, and Emery is sure the player who cost 222 million euros (£200.6million) will be keen to impress. He left Barca without a press conference or anything... but hey, that's how it is.
"Without Neymar PSG is a great club, but with Neymar it's a little better".
Well, actually, we don't have to imagine, as Sunday will see many dreams come true when Neymar steps out onto the pitch in a PSG shirt.
The La Liga side have identified Coutinho, Tottenham playmaker Christian Eriksen and Dortmund forward Ousmane Dembele as possible replacements for Neymar but would face new problems altogether if Messi were to leave.
As for Real, says the Sun, their failure to lure Mbappe to Madrid could have consequences for one English club with the European champions expected now to "crank up their interest in Chelsea's Eden Hazard".
"He's 20, which means two things: he has his whole future ahead of him but he has to show that he has the mental strength for a club as demanding as Barca".