LONDON - Gennady Golovkin has dismissed the idea that Floyd Mayweather's comeback against Conor McGregor will overshadow the Kazakh's Sept 16 clash with Canelo Alvarez.

Golovkin will defend his WBC, WBA and IBF middleweight crowns at T-Mobile Arena three weeks after Mayweather faces McGregor at the same Las Vegas venue.

Retired five-weight world champion Mayweather, now 40, will not have fought for nearly two years by the time he faces 27-year-old Irishman McGregor, a mixed martial arts champion, on Aug 26.