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Manchester United could have Carlos Tevez if they wanted him...
Whether or not he contributes to City's success before the end of the season, he is on his way, for reasons that don't need explaining.
There is no way on earth Sir Alex would have him back.
Even if he hadn't refused to play for City and disappeared to South America, the United manager had plenty of reasons to let him go in the first place.
Despite playing in England for five years, he has made no real attempt to learn English. That in itself is a warning signal. He appears to be too self-serving.
He apparently left United because he wanted to play more often. Fair enough; all strikers want to play more often. Wayne Rooney wants to play every minute of every game.
The thing is, Tevez's petulance showed that HE wants to decide when he does or doesn't play.
Worse still, he's gone on record criticising Manchester, England and his manager Mancini.
It's clear that City have been desperate to unload Carlos, but they need a fee for him. He can't understand why they apparently won't let him go, but City cannot go on loaning players out and subsidising their wages, while players' contracts run down along with their potential resale value.
For example, it is believed that City may have been subsidising Craig Bellamy's wages to the tune of £100,000 a week while he was at Cardiff City.
Tevez is believed to have cost as much as £47 million when City signed him on wages reputed to be £230,000 a week. This explains, in part, Ferguson's reluctance to buy him when he left for City.
With all the unpleasantness and the poster campaign in Manchester two years ago, nobody at United would want the sulky Argentinian back.
Despite his behaviour last autumn, he remained in Manchester after the January transfer window. This was almost certainly a combination of buying clubs' inability or unwillingness to pay City's asking price and/or Carlos's wages.
It's a gamble, because his value is certainly not rising. City could have let him go on loan, but again would have had to pay part of his wages. The buying club would also have had an armlock, which could have led to a reduced transfer fee.
So in summary, Sir Alex could probably have him, but none of the three parties would want him to return to Old Trafford.