Paulo Costa responds to Bogdan Guskov callout

Paulo Costa has responded to a callout from Bogdan Guskov. The Brazilian middleweight acknowledged the challenge from the Uzbek-based Russian fighter. Details of Costa's specific response or whether he accepted the fight were not elaborated in the post. This interaction follows Guskov's recent victories and increased activity on social media. The potential matchup would pit two aggressive middleweights against each other.