According to Tuttomercato, Santiago Castro is a player for Bologna to monitor for the future. For a transfer, the club could consider offers above 40 million euros, possibly close to 50 million euros. The report also notes that Flamengo has been mentioned as intending to seek a prominent player in that role, but that there are currently no concrete offers or moves.

According to Brazilian outlet RTI Esporte, Arsenal and Flamengo are competing to sign Bologna's Santiago Castro. Bologna have valued the player at €40m (£35m), an amount that is too high for Flamengo.

Bologna forward Santiago Castro has been linked with a potential move to Flamengo. According to the Brazilian outlet RTI Esporte, which was investigating these claims, Arsenal are also contenders to sign the Argentine.

Santiago Castro was suggested to Flamengo at the beginning of the year when the club's negotiations for Kaio Jorge were not progressing. Flamengo's management presented the option to then-coach Filipe Luís, who did not favor pursuing the Argentine player. If the new coach approves renewing interest, the Italian press reports that Bologna now values him at a minimum of €40 million.