Cruzeiro star Ribeiro's agent, Robson Ferreira, claims he has been to Manchester to discuss a move and that the champions' boss, David Moyes, is keen on the deal.
Ferreira said: "Manchester United want him. David Moyes has been impressed. I've already been to England and talked personally with them. In United's opinion, he is the complete midfielder."
Cruzeiro have insisted 24-year-old Ribeiro, is not for sale, but more than £15m could tempt them with United desperate to strengthen their midfield.
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