There’s been a lot of scrambling going on behind the scenes this week since Canelo Alvarez formally withdrew from May 5th’s rematch with Gennady Golovkin following an adverse drug test result.

The substance Canelo tested positive for was defended by him and his team due to contaminated meat he ingested in his native Mexico.

He’ll learn what happens him in terms of being suspended or not later this month when he goes before the Nevada State Athletic Commission but for the meantime, attention has now turned to who will fight instead of him May 5th.

Golovkin’s team straight away put in to promote a new event in Las Vegas as soon when they realized Canelo was definitely ruled out and after that – two main contenders for the fight emerged.

Demetrius Andrade and Gary ‘Spike’ O’Sullivan.

However, Andrade has let slip on social media that he won’t be getting the fight anytime soon:

This puts Irishman O’Sullivan in pole position to land the fight which would be the biggest of his career (27-2-19KO).

Golovkin’s (37-0-1-33KO) promoter Tom Loeffler has in the past expressed positive sentiment towards the idea, too.

O’Sullivan boasts a large Twitter following and has impressed on his last couple of outing on the States shown on HBO and ESPN respectively, so could work well as a late replacement on such short notice in terms of his fan-friendly fight style.