You Can't judge Riquelme on a penalty miss, even Ronaldinhio has missed 2 penos this season. Villareal would not be where they are without him. His a quality player.

That said not all South Americans cut it in the Prem with the Physical side and adapting to the culture and think he is more suited to Spanish league, CL and International football where you get more time on the ball.

Think he is a player Man Utd need if they can have a good physical ballwiner alongside him.