Paulo Costa responds to Bogdan Guskov's callout

Paulo Costa has responded to a callout from Bogdan Guskov. The Brazilian middleweight addressed Guskov's challenge, though the specific nature or content of Costa's response is not detailed in the brief post. The interaction suggests ongoing back-and-forth between the two fighters on social media, but additional context about what either fighter specifically said or whether this could lead to a potential matchup is limited.