Manchester United boss Sir Alex Ferguson has failed to convince Carlos Tevez to remain at Old Trafford.

The Guardian says the Argentinian, who has become ­disillusioned at Old Trafford, is considering his options, including a potential move across the city to Manchester City, although that is said to be "only one of a few options" he is weighing up.

He is also said to have been nonplussed by Ferguson's intervention after a source close to him said: "You treat someone badly for a whole year, you don't make it up with a telephone call, right?"

Tevez is in Quito for Argentina's World Cup qualifier with Ecuador, following which his advisers "will start talking with different clubs", the source confirmed.

"It should take two to three weeks for Carlos's future to be finally decided."

When asked about moving to City, the source said: "It's an option. But no one option is more serious than another - City, Chelsea, Liverpool: they're all options."