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Now, one eagle-eyed Celtic supporter on Twitter has spotted a remarkable coincidence linking the Notorious and the Glasgow giants.

In McGregor 's stunning 13-second destruction of Jose Aldo in December 2015 the Hoops were won away to St Johnstone.

McGregor throws a punch at Floyd Mayweather Jr during their boxing bout in 2017

Nothing remarkable with that you may say but the two-weight world champion also came up with the goods in his rematch with Nate Diaz hours after Brendan Rodgers' side defeated the Saints 4-2 at McDiarmid Park in August 2016.

So who were Celtic playing when McGregor fought Floyd Mayweather in the boxing ring last year? St Johnstone, of course. The difference was the game was at Parkhead and finished in a 1-1 draw.

That bad omen didn't help the 30-year-old as he was stopped in the 10th round by the greatest pugilist of his generation.

McGregor needs all the good vibes he can muster as he faces the daunting prospect of taking on Khabib Nurmagomedov, who boasts a record of 26-0, in his octagon return on October 6.

Well, fear not, CSCpics has checked the calendar and Celtic are away to St Johnstone hours before the fight.