Fluminense initially set their sights on Marino Hinestroza from Atlético Nacional, but negotiations fell through due to two demands from the Colombian club. Atlético Nacional wanted to keep the winger until the end of their Libertadores campaign, which would postpone his arrival until after August 19, and they also wanted to include Serna in the deal, a condition that was rejected by Fluminense's management and coach Renato Gaúcho. The 23-year-old Colombian is under contract with Atlético Nacional until December 31, 2027, and his market value is estimated at €6.00 million according to Transfermarkt. Several other clubs, such as Benfica and Boca Juniors, have also been recently associated with the player.