ANDRE Villas Boas admits he cannot see himself managing into his 70s like his opposite number on Sunday.
The Chelsea boss takes his side to Old Trafford to do battle with Manchester United and Sir Alex Ferguson, who is twice his age.
But Villas Boas, who was barely out of nappies when Fergie took charge of United in 1986, cannot see himself on the touchline much beyond his 50 th birthday.
He said: “It is my idea to have a short career, perhaps 12 or 13 years, it is just my perspective on the future – I don't see myself still doing it in 37 years.
“Sir Alex was a player and I was not, so he came into it later. There are many examples in football of people who finish their playing career and then go straight into management at a top club. I was lucky enough to start with a very talented squad at Porto.
“You have to pay your respects to a person who has achieved as much as he has, but you have to treat Sunday as just another game.
“I don't think it's about two managers facing each other as our impact on the game is minimum. Its is about the players' motivation – we just provide the focus.”