Alex Telles' agent said several clubs have registered their interest in the Galatasaray left-back amid speculation linking him to Chelsea, Paris Saint-Germain and Inter Milan.
Telles, 22, has been widely linked with Chelsea, who are in the market for a new left-back after Filipe Luis returned to Atletico Madrid, while PSG and Inter are also said to hold an interest.
The player's agent, Fernando Otto, told Eurosport Turkey that there has been serious interest in the Brazilian.
"There are clubs that are making offers, although none have been official," he said, in quotes translated by Turkish-football.com. "He could play for Chelsea and PSG without using a foreign player space due to having an Italian passport, but he is happy at Galatasaray."
Otto had previously told Radyospor that former Galatasaray boss Roberto Mancini wanted to take the player to Inter.
"Telles developed under Mancini it is no surprise that Mancini wants him but no formal offer has been made," he said. "I have good relations with the manager and we often meet but there is no deal on the table."
Turkish newspaper Sabah has said Galatasaray are seeking around €10 million for the defender.
Chelsea had hoped to tie up a deal for Augsburg left-back Abdul Baba Rahman but the Daily Mail has reported that Telles is viewed as a cheaper alternative.