The Colombian full-back, who missed a glorious chance earlier to give the hosts a first-half lead, beat Nick Pope with a towering far-post header with just over 90 seconds of stoppage time left to play.

Munoz had missed two glorious chances earlier in the match but made no mistake in the 94th minute as he nodded past Nick Pope at the far post

United weren't at their fluent best in South London, but looked to have the points in the bag until the 94th minute when Muñoz headed in a Guehi cross, with Nick Pope - who had had a superb game for the visitors - unable to keep it out in what was a bitterly disappointing finish for the Magpies.