Fans are fearing the worst as ‘Sugar’ Shane Mosley prepares to return to the ring.

The former three-weight world champion is set to headline a Celebrity Boxing event in Pennsylvania on Saturday night.

Mosley, 53, will take on full-contact karate fighter Bob Kofroth in a light-heavyweight scrap, eight years removed from his retirement from professional boxing.

During a career stretching from 1993 to 2016, Mosley won world titles at lightweight, welterweight and super-welterweight – achievements that earned him a first-ballot International Boxing Hall of Fame induction in 2020.

Mosley never shied away from a challenge and shared the ring with several great fighters including Floyd Mayweather, Canelo Alvarez, Manny Pacquiao and Oscar De La Hoya.

Since hanging up his gloves he has turned his attention to being a boxing trainer and is currently working with YouTuber-turned-boxer Jake Paul.

But after 61 pro fights (49-10-1) the California puncher is struggling to kick the boxing bug.

Promoting his upcoming clash with Kofroth on social media, Mosley sent a message to his fans: “Make sure you watch my fight on September 28.”

However, his supporters were left concerned by the delivery of Mosley’s message, with many claiming his speech is ‘slurred’.

Reacting to the video, one fan wrote: “Don’t do it your voice is slurring you’re gonna wind up like Muhammad Ali.”

A third added: “Dude you can barely talk as it is. Stay on your damn couch my guy. Nothing for you to prove.”