"The South Americans love playing football, it's just in their blood. The three Brazilians - Anderson, Rafael and Fabio - love it and are first to training every morning. It's a breath of fresh air," he told Inside United.
"Antonio Valencia is as tough as nails with great discipline about him. Chicharito has a fantastic attitude to playing and everything else. It's really good."
United face Wigan Athletic in the Premier League next Saturday.