Manchester United boss Sir Alex Ferguson admits he's a big fan of Boca Juniors.

United face Boca in the Audi Cup and said: "If you can't sleep at three in the morning in England, then you can see Boca.

"And I don't sleep at three so I have seen them many times.

"They are one of the best teams in South America. We had a very competitive game with them at Old Trafford three years ago."