Neymar was seen as the jewel in PSG’s crown last season following his £200m transfer from Barcelona.
But his temperamental first campaign in Ligue 1 – coupled with Mbappe’s impressive World Cup – means the Frenchman is now PSG’s most valued player.
Real Madrid have been linked with both forwards for months.
And it appears as though they could land Neymar – should they want to splash the cash – while Mbappe will not be sold.
That is according to Spanish radio station Onda Cero, who claim PSG have resolved to keep Mbappe at all costs.
And if that means selling Neymar then so be it.
According to Onda Cero, the decision over Neymar’s future now rests with manager Thomas Tuchel.
Whereas last season it was the club’s hierarchy who determined what happened to Neymar – who was linked to Real almost as soon as he arrived in Paris – now the new manager has the final word.
Were Real to move for Neymar they would have to at least match the transfer fee PSG raised to prise him out of Barcelona.
The forward, 26, has not played for PSG since January after suffering a foot injury that ruled him out for the second half of their title-winning campaign.
He returned to full fitness in time to lead Brazil in the World Cup and scored two goals before his side were knocked out by Belgium in the quarter-finals.