Diogo Dalot has Manchester United fans fuming after his unnecessary foul in the last minute of stoppage time sparked a late Chelsea comeback.
The Portuguese failed to keep up with the pace of the fresh legged Madueke, falling over the Chelsea man and tripping him down.
After a long VAR review, Chelsea were eventually awarded a penalty. Palmer stepped up from the spot once again to score past Onana to make it 3-3.
But the equalising goal put United on the back foot with Chelsea attacking again straight from the kick-off. And a minute later Palmer had the ball in the back of the net again, completing his hat-trick.
A corner is taken quickly, with Fernandes finding Palmer with a pass on the edge of the box. The former City man takes a couple of touches before lashing in a strike. The effort takes a deflection off Scott McTominay and into the back of the net to win it for Chelsea.