Manchester United winger Amad Diallo says a former Chelsea player was his idol when he was growing up. The Red Devils are preparing to face rivals Manchester City in the FA Cup final this weekend in a bid to salvage something from what has been a miserable season. Erik ten Hag’s side ended the Premier League campaign in eighth, their lowest finish since the league was founded in 1992. So it all rests on Saturday and ahead of the clash, Amad has named his idol growing up who was an FA Cup specialist during his playing career. READ MORE: Aston Villa have joined Man United in race to sign ‘one of…