Georges St-Pierre hasn't fought in the UFC since defeating Johnny Hendricks back in November 2013.
Widely considered one of the greatest to grace the Octagon, GSP retired with a 25-2 career record, remaining unbeaten through his last 12 bouts.
But he could be returning, after being spotted in attendance as Nate Diaz defeated Conor McGregor in Las Vegas.
As MMAFighting's Ariel Helwani notes, the Canadian is not the type to take a watching brief without there being something else potentially in the works.
https://twitter.com/arielhelwani/status/706316834564210688
After reclaiming the welterweight belt at UFC 83 in 2008, GSP saw off the challenge of everyone from BJ Penn to Nick Diaz.
And Dana White confirmed discussions had been held with a view to the 34-year-old returning to the promotion, but admitted he was "unsure" whether anything would come of it all.
https://twitter.com/rkruck/status/706382618867044352
