Inter Milan completed the signing of Brazilian youngster Juan from Internacional on Monday.

A talented defender, Juan is a member of Brazil's Under-20 team, with which he won the South America Youth Championship last year.

Inter was considering shipping Juan out on loan to Novara until the end of the season, but the club has now decided to keep him in Milan.

The Nerazzuri is also reportedly on the verge of completing a deal for Porto midfielder Fredy Guarin.

Meanwhile, Roma has signed Fluminense winger Marquinho on loan and former Juventus midfielder Ruben Olivera has become Fiorentina's fifth January signing after joining from Lecce.

The Italian transfer window closes at 7 p.m. local time (1800 GMT) on Tuesday.