#2. Conor McGregor vs. Dan Hooker

John Kavanagh recently mentioned he feels a Conor McGregor vs. Dan Hooker fight could make sense as he ran through a list of potential next opponents for 'The Notorious'.
While Hooker remains a credible threat in the lightweight division, he has now suffered three losses in his last four fights. With that being said, these losses came against Dustin Poirier, Michael Chandler and Islam Makhachev and 'The Hangman' is still ranked one place above McGregor at No.8.
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If McGregor is serious about challenging for lightweight gold, Dan Hooker seems an appropriate test. While Hooker has teased a drop down to 145 lbs recently, he could likely be convinced by the big payday a fight with McGregor presents.
#1. Conor McGregor vs. Tony Ferguson

Conor McGregor and Tony Ferguson are two of the most popular stars on the entire UFC roster. They are ranked No.9 and No.7 respectively and have never crossed paths before so this one makes all the sense in the world.
It was not long ago that Ferguson racked up 12 straight wins at lightweight. He has now lost his last three bouts with each of them being fairly one-sided. It would appear that Ferguson would present McGregor with the opportunity to pick up a big name win, without as much risk as certain other high level fighters in the division.
Conor McGregor vs. Tony Ferguson seems like the fight to make should 'The Notorious' need one more bout prior to challenging for the UFC championship.