This landmark event is set to take place on April 13 at the T-Mobile Arena in Las Vegas and the card is slowly coming together. 

So far one title fight has been announced and that is between UFC women's strawweight champion Zhang Weili and Yan Xianon, but speculation is still rife as to whether any UFC legends will step into the Octagon. 

Former UFC middleweight champion Michael Bisping has had his say on which legend he thinks could appear at the event and his pick does not come much bigger. 

"I don't know what this rabbit out the hat is at UFC 300, it's not going to be Brock Lesnar, Rhonda Rousey, Conor McGregor or Jon Jones. But the UFC will never let us down," Bisping told Betway. 

"Maybe it's Georges St-Pierre because he's been floating about a bit lately. He has said it's not going to be him, but Georges is a nice guy and a bad liar. Georges St-Pierre is my pick."

Georges St-Pierre is considered by many to be the greatest MMA fighter of all time and was a two-weight world champion with the UFC having won titles at welterweight and middleweight. 

Live on DAZN: Watch Ed Matthews take on a mystery opponent for MF & DAZN X Series 12 on Saturday, January 20.