Paris Saint-Germain are reportedly knocking on Real Madrid’s door for midfielder Federico Valverde, whose future in a white shirt is suddenly uncertain after a dressing room altercation with Aurélien Tchouaméni. The Uruguayan lives and dies for Los Blancos, leaving it all out on the pitch every time he plays no matter what position the club needs him to fill. Poised to become the team captain next season once Dani Carvajal completes his expected exit, Valverde has always been considered an essential pillar of Real Madrid . Yet his recent dressing room fight with Tchouaméni, which resulted in a trip to the hospital for Valverde and a $588,500 (€500,000) fine for both players, presented European giants with the perfect opportunity to try and pry him away from the Spanish capital. AS report PSG have had Valverde in their sights “for some time” and used the Bernabéu’s civil war to send an “informal” reminder of their interest.…