Seeking reinforcements for the winter transfer period, Beşiktaş has initiated a move to sign Gustavo Martins from Gremio. The club is preparing to make an offer of €3.5 million for the 23-year-old Brazilian centre-back, who joined the Brazilian club in January 2023. Martins has a contract until the end of 2027 and a current market value of €3.00m, according to Transfermarkt.