Fabian Hurzeler admitted it was “very emotional” seeing his Brighton side defeat Manchester United in dramatic fashion.
Danny Welbeck opened the scoring against his former side for the 100th goal of his career, giving the hosts the lead heading into the break.
That was cancelled out on the hour mark when Amad Diallo scored a marvellous solo goal which took a heavy deflection on the way in.
Man Utd thought they had put themselves in front after substitute Alejandro Garnacho fired in at the back post, but it was ruled offside after Joshua Zirkzee inadvertently touched the ball on the line.