Conor McGregor: I'll quit fighting before I suffer any brain damage

Is Mayweather entering the octagon? (1:36)

Brett Okamoto discusses the possibility of Floyd Mayweather making a deal with UFC to enter the Octagon. (1:36)

Conor McGregor insists he won't take "stupid" risks and will quit fighting before he suffers any potential brain damage as he eyes a return to the UFC.

Last week McGregor stated his next fight will see him return to the octagon with the lightweight champion looking to defend his belt for the first time since knocking out Eddie Alvarez in November 2016.

"I always look at the end from a damage-taken standpoint," McGregor told Sky Sports. "How much damage have I taken? How is my brain? How is my mental health? How is my physical body? How is my training? How is my preparation? How is my hunger for it?

"That is where I gauge how long I will do it and there is still a lot left in me."

But after his superfight with Floyd Mayweather, McGregor admitted he no longer fights for the financial gain, but for the love of the sport.

"It is not necessarily a money thing for me. I am passionate about fighting. Fighting is what I love to do. I will continue to do it as long as I am healthy and willing to put in the work that it takes to do. I will not be stupid though. I will not notice things about myself and then continue to do it like many others before me.

"It is a dangerous, ruthless business and I am aware of that. Thankfully I am in a position of great wealth. I do not need to do it. I am doing it for the love of it. I will make my decision when the time comes."