Chelsea are reportedly on the verge of signing Fluminense defender Wallace.
It is believed that a £4.5m fee for the 18-year-old Brazilian has been agreed by both clubs.
"The negotiations with Chelsea are very advanced and the signature is almost certain," the full-back's agent Frederico Moraes is quoted as saying by The Sun.
Wallace signed his first professional deal with Fluminense last year following a spell in the club's youth academy.