Paulo Costa responds to callout from Bogdan Guskov

Paulo Costa has issued a response to a recent callout from middleweight fighter Bogdan Guskov. The Brazilian veteran acknowledged the challenge from Guskov, though the specific details of Costa's response were not elaborated in the post. This represents another potential matchup in the middleweight division as Guskov seeks high-profile opponents. The interaction between the two fighters suggests ongoing negotiations or interest in making the bout happen. Further details about Costa's willingness to accept the fight or timeline were not provided.