Mark Ogden questions André Onana's performance as he continues to cause issues for Man United's defence. (1:22)Open Extended ReactionsManchester United have been handed a boost ahead of their Europa League semifinal against Athletic Club after Amad Diallo and Matthijs de Ligt returned to training. De Ligt has missed the last six games through injury. Amad Diallo's return will come as a significant boost to Manchester United. If Amorim decides De Ligt is not fit enough to start against Athletic Club, he will pick his back three from Mazraoui, Harry Maguire, Leny Yoro, Luke Shaw and Victor Lindelöf.