MMA‘s poster boy was set to make his grand return last month in the main event of UFC 303 in Las Vegas against Michael Chandler.
But the Irishman suffered a broken left pinky toe in one of his final sparring sessions before he was due to jet out to Sin City and the fight was scrapped.
McGregor, 36, initially earmarked late August or early September for his rescheduled return.
But SunSport understands the UFC has all of their pay-per-view headliners finalised – with the exception of their December show.
And McGregor admits he likes the idea of topping the bill of UFC 310, which is slated to take place on December 14.
Inside McGregor's Notorious lifestyle
With more sides to his personality than an Octagon, Conor McGregor's rise has been an enthralling watch.
Going from UFC icon to entrepreneur and Hollywood star, the Irishman has transcended the sport he helped bring to the masses.
The only thing sharper than his fashion sense is his tongue and the Dubliner has several bitter spats under his belt, including with UFC legend KhabibNurmagomedov.
That row led to one of his biggest controversies in 2018 as he travelled 3,000 miles to confront Khabib in a vicious attack on his bus.
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