Irwin won over by Man Utd's Evra
"Evra has looked very good this season," he said.
"I must admit I was a bit worried when he first came in," he added. "I always thought Heinze was a better defensive player, but Evra did look good going forward. I thought that if you could have merged the two of them then you'd have the perfect full-back.
"It was a tough start for Patrice and everyone remembers his debut against City. But last year you could see him getting better and better all the time, and I'm very impressed with his all-round game now."