Celtic fans have been given a peak into a parallel universe which could have included a fighting champion playing for their team.

Conor McGregor shared a picture of him sporting a Celtic strip playing for the Parkhead team.

The photoshopped image features a backdrop of the Green Brigade's giant tribute displayed at their match again Astana in August.

The MMA fighter shared the picture with his 2.2 million followers with the caption: "In a parallel universe could we have seen this?".

The post was met a wild reaction from fans and attracted more than 210,000 likes.

McGregor previously donned the Celtic strip during a workout giving the team a shout out.