Former Chelsea defender Jason Cundy has been speaking ahead of his old side’s clash against Manchester United later today. Chelsea travel to Old Trafford to take on Manchester United, who have just named Ruben Amorim as their next permanent manager. Premier LeagueHowever, Amorim does not officially take charge until November 11, meaning that Ruud van Nistelrooy will remain in the dugout until then. Van Nistelrooy knows Noni Madueke well after managing the winger at PSV Eindhoven and is one Chelsea attacker his team will have to watch out for this afternoon. READ MORE: What Noni Madueke has don…