Porto has shown interest in Kaio César and is monitoring his situation. Al-Hilal does not wish to sell the player. The Saudi club's coach, Simone Inzaghi, wants to keep the 21-year-old Brazilian winger for the season, further complicating any potential transfer. Despite the interest from Porto, as well as Sporting and Wolfsburg, Al-Hilal remains firm in its decision not to sell, with Inzaghi relying on Kaio for the remainder of the campaign. The player's contract with Al-Hilal runs until June 30, 2028, and his market value is estimated by Transfermarkt to be €5.00m.