Yep, he caught the ball and whilst he was in mid-air a Brighton player challenged him and he fell awkwardly. Looks like his kneecap came out!
Arsenal fans will be in meltdown. Malpay fouls their keeper who suffers a bad injury, then he goes and scores the winner. Wait for the "he should not have been on the pitch to score" comments
At a stretch a yellow as the keeper had full control of the ball and the player did not need to challenge him, but never a red.