Rio Ferdinand says victory at Roma is proof Manchester United are maturing on the European stage.

Ferdinand, 29, said: "To get a win and to keep a clean sheet was fantastic - definitely a job well done.

"It always takes time to mature and to get professionalism in away performances, that's especially the case in Europe. I've been involved in some good performances away in Europe - but not consistently.

"There's obviously an improvement in our maturity and our concentration levels."