Arteta said: "In Paris, I was playing behind Ronaldinho and Jay- Jay Okocha so I could hardly help picking up tips about how to go past a player.
"I learned a lot from Ronaldinho. Some of the things he did were incredible.
"I remember going in to training and hearing him say he was joining United. Then Barcelona came in at the last moment and he seemed to prefer the idea of living there.
"That was a big loss for United. He'd have been a sensation in the Premier League, particularly at Old Trafford."