Paulo Costa responds to Bogdan Guskov's callout

Brazilian middleweight Paulo Costa has responded to a callout from Bogdan Guskov. The post does not provide details on the nature of Costa's response or whether he accepted a potential matchup. Guskov, a rising contender, has been actively seeking high-profile opponents. Costa, a former title challenger, remains a significant name in the middleweight division. Further details on Costa's exact response are not available in the post.