Manager Zinedine Zidane is reportedly concerned that Vinicius Junior is currently not handling the pressure of playing for Real Madrid.
Having moved to the Bernabeu last summer, the 19-year-old has already been provided with 21 starts and 12 substitute appearances in all competitions.
However, according to Marca, Real had been expecting more from the Brazilian at this stage of his development.
Zidane is said to feel that the prospect is being 'weighed down' by expectations at Los Blancos as they bid to close the gap to Barcelona.
Paris Saint-Germain are allegedly interested in signing the attacker as part of any deal which would see Neymar move in the opposite direction.