This is why he got some criticism and I am willing to say I was one of them. I had no doubt about his football ability. What I found infuriating was his petulance, constantly moaning at referees (including tripping one up), diving at times and constantly looking like he was on the edge of a red card, I think he actually got a red card once after being back for one or two games since the previous one. I like him as a player but some of the criticism was warranted and justified if you ask me.
He didn't trip the ref up. The ref tripped over him and sent him off in embarrassment.