Unai Emery: Aston Villa boss reveals why he went down Old Trafford tunnel before full-time in eight-goal thriller at Man Utd

Unai Emery headed down Old Trafford tunnel before full-time after Man Utd rescued a 4-4 draw against his Aston Villa team; Patrick Dorgu scored late equaliser in thrilling contest; Villa director of football operations Damian Vidagany questioned legitimacy of last goal

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