Former UFC Double Champion Conor McGregor is known to troll fighters frequently on social media

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 Conor McGregor has ridiculed former bantamweight champion Petr Yan on the social media platform Twitter

 Conor McGregor compares Petr Yan to Khabib Nurmagomedov's friend Hasbollah

 Hasbollah is the new UFC fighter of short 3.5 feet who has recently contracted with the UFC, he hasn't fought inside the octogon yet

 Conor McGregor shared a photo of Petr Yan, tweeting that "Congrats Hasbulla on signing with the UFC,"

 Conor McGregor just made fun of it and thought it necessary to laugh before a fight

 However, Conor McGregor later praised Petr Yan, saying that he was one of the best fighters weighing 135 pounds.

 Former Bantamweight Champion Petr Yan will take on rising star Sean O'Malley at UFC 280 on October 22

Conor McGregor revealed MMA and boxing bout vs Floyd Mayweather, $1.5 billion contract, check full details-