However, he was soon overcome by fatigue, which paved the way for Mayweather to register a tenth-round TKO victory.
Like McGregor, Pacquiao, who has won eight world championships in different weight divisions, also lost to Mayweather in a disappointing "fight of the century" in Las Vegas in 2015.
This past week, while speaking to his sponsor Betsafe, McGregor said his focus wasn't exclusive t the Octagon or the boxing ring.
And it seems that Pacquiao wants to be the man to be the UFC Lightweight champion's second opponent in the squared circle.
"In the Philippines we don't have a problem (producing good boxers)", said Pacquiao, a hero in his home country and also a senator.
The reaction from both the MMA and boxing communities was mixed, to say the least, and below you can see some of the best responses to the reports. "But we have not yet had any follow-up conversations".
Palestinian President won't meet Pence over Trump's Jerusalem move
Amid Jerusalem controversy, Palestinians "will not receive" the USA vice president during his scheduled visit this month. Al-Khalidi added that "the USA in its decision on Jerusalem has crossed and passed all red lines".
Pope wants to change phrase in Lord's Prayer
The Lord's Prayer , which is memorized by millions of Christians across the world, appears in the New Testament of the Bible. He added that the phrase used by the French, or similar wording, should then be implemented around the globe.
Flake out: Light snow could fall in some Gulf states Friday
Temperatures in Boston are expected to peak in the low 40s Friday afternoon, and remain in the 30s through Sunday. The jet-stream disturbance responsible for this is now wringing out snow over West Texas and northern Mexico.
Could Conor McGregor be his inspiration to try something new?
"Happy Thanksgiving! Stay fit my friend".
Diaz last competed in August 2016, losing to McGregor via decision.
"It depends who they can finalize as my opponent by April", Pacquiao said.
McGregor, 29, now holds the UFC's 155-pound championship and is the only fighter in the promotion's history to hold titles in separate weight divisions simultaneously.