Manchester City are following Gremio defender Mario Figueira Fernandes.
Fernandes, 19, has been likened to Inter Milan centre-half Lucio and Brazilian press reports have City already in contact with Gremio about a price for the youngster.
Indeed, City had representatives in Porto Alegre this week for talks with Gremio about Fernandes.
The Premiership giants are moving quickly after becoming aware of Juventus and Spanish giants Barcelona and Real Madrid also expressing interest in the young stopper.
