Conan O'Brien Calls For Fight With Conor McGregor Over UFC Shares Former UFC Lightweight and Featherweight Champion Conor McGregor has been calling for a share of the UFC. Conan O'Brien has offered a solution of sorts, to help with the problem. When Conor McGregor asked for shares of the UFC, he was flatly denied. This request came after the several celebrity investors bought stakes in the company. Two of the investors include actor Mark Walhberg, and late night talk show host Conan O'Brien. Recently, McGregor jokingly called for a fight with Walhberg. He took to Twitter to issue the challenge in exchange for Walhberg's shares. "I've decided to challenge hollywood actress mark walhberg next. a fight for all the shares!" Following this, the aforementioned Conan O'Brien spoke to TMZ. In the interview, O'Brien was asked if he would give his shares to McGregor. He responded with quite the challenge. "\u201cI will fight him for his . If he can take me in the Octagon. I\u2019d have to take a look at the paperwork. I\u2019m all about the paperwork. If the paperwork works out, then we\u2019ll talk about it." Conor McGregor was quick to respond. He took to Twitter to accept the challenge, and then some. "Challenge accepted Conan! I\u2019ll whoop you and Walhberg in the same night. Double shares for the Double Champ!" So will Conor McGregor finally get his shares of the UFC? Will he take on both Conan O'Brien and Mark Walhberg in the same night? More than likely not. Either way, hopefully McGregor will be back in the Octagon sooner, rather than later.