Paris Saint-Germain have reportedly demanded that Real Madrid include Vinicius Junior as part of any potential deal for Neymar.
Los Blancos are keen to land the Ligue 1 star ahead of rivals Barcelona, with the forward agitating for a move this summer.
However, PSG have insisted that they will only do business if Madrid include their own Brazilian forward in the deal, according to AS.
Parting ways with the 19-year-old starlet is not a prospect those at the Bernabeu are willing to consider, though, and they have already rejected this suggestion three times.
Madrid have tried to include other players in the deal, such as Keylor Navas, Gareth Bale or James Rodriguez, but PSG have not been interested.