Bruma enjoyed an impressive season for Lisbon last campaign before scoring five goals for Portugal during the Under-20 World Cup, and representative Catio Balde has admitted that his player is attracting plenty of interest.
Balde told Antena 1: "I was in charge of presenting offers to Sporting. There are offers from foreign clubs, from Chelsea and from Galatasaray, worth €8m, that could reach €12m (£10.3m).
"From this moment on, considering that he is a highly coveted player, it is possible that more offers will arrive, because I know that several clubs were waiting for the best moment to make a move.
"Right now, Bruma's mind is not on Sporting."
The 18-year-old has reportedly refused to train with the Portuguese club in an attempt to force a transfer.