Paulo Costa responds to Bogdan Guskov callout

Paulo Costa has issued a response to Bogdan Guskov's recent callout. The Brazilian middleweight acknowledged Guskov's challenge through social media. Specific details of Costa's response and whether he accepted or declined the potential matchup were not provided in the limited information available. This exchange follows Guskov's recent victories and apparent desire to face higher-ranked opposition. The interaction between the two fighters suggests potential interest in the bout from both sides.