Paulo Costa responds to callout from Bogdan Guskov

Paulo Costa has responded to a recent callout from Bogdan Guskov. The nature and content of Costa's response are not detailed in the available information. This exchange indicates potential interest in a matchup between the two middleweights. Further details about Costa's comments or whether a fight will materialize remain unclear. This interaction adds another chapter to Guskov's recent activity in calling out established fighters.