By Harry Davies Conor McGregor has been backed to make a ground-breaking return in September that could see him fight for another UFC world title. The UFC has been rumoured to add a 165lb division for years but the promotion are yet to introduce the weight class. Fans are now convinced the division will be added later this year after UFC lightweight Rafael Fiziev told Ushatayka: “This is not a rumour, this is already for sure as far as I know. “I heard that this is already true and even they have already fought, they even identified something there.” UFC boss Dana White said McGregor’s comebac…