Ortiz joined Flamengo last year after moving from RB Bragantino, and it's expected that he will leave for a European club in the near future.
Forest's chief, Edu, is said to be keen on signing Ortiz, but the team faces competition from several top Italian clubs, including Napoli, Juventus, and Roma.
Forest is planning to make an offer for Ortiz in January, rather than waiting until the summer transfer window, in an effort to secure his signature.