Conor McGregor is officially ruled OUT of UFC 303 return with 'injury', Dana White reveals - as replacement fight is announced days after Irishman was seen on wild night out in Dublin

Conor McGregor's long-awaited return to the UFC has officially been canceled, with the Irishman pulling out of his upcoming fight against Michael Chandler through 'injury'.

The news was revealed by UFC chief Dana White on Instagram late on Thursday night, as he posted a video to reveal the new schedule for this month's UFC 303 card in Las Vegas. 

Alex Pereira and Jiri Prochazka will now headline the event, facing off on Saturday June 29 - and the news will come to a huge blow to McGregor's legions of fans who had planned a trip to Sin City in two weeks' time.

No further information has been given on the nature of McGregor's injury, but at the age of 35, there are now serious doubts over whether he will ever return to the Octagon.

In a video announcing the news, UFC chief White simply stated: 'Alright guys, here I am again... Conor McGregor is out of 303 vs Michael Chandler with an injury,' before going on to reveal the status of the new card.

More to follow.