#3 Robin Van Persie

Arsenal have a history of selling their best players to rival clubs and it was really a given that it would come back to haunt them. Van Persie left Arsenal for Manchester United to get his hands on a Premier League trophy and he did that.W
Van Persie had already scored twice against Arsenal in his first season at Old Trafford, but he didn't celebrate any of those two goals in respect. Still, he was continuously jeered by Arsenal fans which he clearly didn't like. So, the next time Van Persie visited Arsenal, he scored and celebrated in front of his former fans which left them infuriated. Van Persie had the last laugh as he won the Premier League title in his first season at Old Trafford, something he couldn't do in years at the Emirates.