Pacquiao says a fight between McGregor and Floyd Mayweather will never take place.
Rousey suffered a 48-second knockout during her bantamweight title fight against Nunes on 30 December.
Rousey lost back-to-back fights for the first time in her MMA career.
With GGG vs Canelo a long way off, 2017 needs something to steal the show.
Mayweather is willing to come out of retirement to fight McGregor.
Cris 'Cyborg' Justino offers words of encouragement to Rousey.
Rousey's UFC future is in question after her loss to Amanda Nunes at UFC 207.
Nunes beat Rousey in 48 seconds in the first round of their bantamweight title fight at UFC 207.
Rousey lost her second career fight and failed to regain the women's bantamweight title at UFC 207.
AnnMaria De Mars also urged Rousey not to take any decisions when she is emotional.
The WWE Hall of Famer said the punishment the Beast Incarnate received was nothing more than a slap on the wrist.
Rousey showed zero defence as the Brazilian took less than a minute to beat the American fighter.
The 29-year-old fights for the first time since her 2015 defeat to Holly Holm.
McGregor announced that he was taking time off after his win over Eddie Alvarez in November.
Rousey takes on Amanda Nunes for the bantamweight title at UFC 207 on 30 December.
Lesnar is serving a suspension after he failed US Anti-Doping Agency's in-competition drug test at UFC 200.
Rousey is returning to the octagon after a 13-month hiatus following her loss to Holly Holm.
Rousey will return to the octagon at UFC 207 for the first time since her defeat to Holly Holm.
Rousey has given just a couple of interviews since her fight with Nunes was announced.
Woodley and McGregor had a confrontation ahead of their respective fights at UFC 205.
McGregor and Mayweather have not confirmed on news of a possible bout between the two.
Cris "Cyborg" Justino was notified by the USADA of a potential doping violation.