Paulo Costa responds to Bogdan Guskov's callout

Bogdan Guskov publicly called out Paulo Costa for a potential matchup, and Costa has now responded to the challenge. The brief post confirms that Costa acknowledged Guskov's callout through social media. Details of Costa's specific response or whether he accepted the fight proposition are not provided in the original message. This represents the latest development in Guskov's efforts to secure high-profile opponents in the UFC middleweight division.