Ferguson: Blanc too young for France
The 44-year-old Frenchman - who played under the Scot at Old Trafford for two years and won the Premier League title in 2003 - has enjoyed a stellar start to his managerial start.
Blanc led les Girondins to their first Ligue 1 title in 10 years last season, and has since guided the Stade Chaban Delmas to top spot in their Champions League group, which included Juventus and Bayern Munich.
As a result, the former World Cup winner has been tipped to replace Raymond Domenech as leader of les Bleus after this summer's finals in South Africa.
However, Red Devils' supremo Ferguson believes Blanc still has many years success ahead of him in club football before needing to step up to the international scene
“I think he is too young to become a national team coach," Ferguson told Canal+.
"I think Laurent has a lot of things to do before taking this kind of role. This is his first season as a champion and managing his team in the Champions League.
"He should stay in Bordeaux.”