Amad Diallo wrote his name into Manchester United folklore on Sunday. His late winner against Liverpool will go down as one of the all-time great Old Trafford moments, and now, the Ivorian will hopefully be able to kick on and make a real name for himself at Manchester United. Indeed, while Diallo made himself something of a hero on Sunday, he’s not played all that much this season. Speaking on Premier League Productions, Leroy Rosenior has been discussing Diallo’s lack of minutes and his recent performances, and he says that he’s surprised that he hasn’t played more football for United this s…