Alex Ferguson blasted French teenager Paul Pogba for being disrespectful in leaving Manchester United for Juventus.

Pogba, 19, was considered one of the best talents to come out of United's academy lately, but he rejected all offers of a new deal with the club last season.

Ferguson announced the midfielder's departure on Manchester United TV, adding: ''Pogba signed for Juventus a long time ago as far as we're aware.''

Juventus made no formal announcement on Tuesday.