Conor McGregor has major reservations ahead of the Jake Paul vs. Anthony Joshua boxing fight scheduled for later this month.Paul was set to fight Gervonta Davis in November, but that clash fell through after the latter’s legal issues. ‘The Problem Child’ shocked the world by announcing he would be facing former heavyweight champion Joshua.Many have expressed concern for Paul, as he would be going up against a powerhouse who could do serious damage. McGregor, while speaking to Bloody Elbow, respected Paul’s decision to face Joshua:“If he makes that walk, I’ve got to give him my respect for that. It’s very dangerous, you know.”The former UFC two-division champion then provided a stark warning about the threat Joshua possessed:“Joshua’s a big boy and a powerhouse. I’ve sat ringside and watched Joshua; that’s a heavy, punching man. He’s a happy and good person. He has an anger in him, he has a darkness in him, this Anthony Joshua.”Conor McGregor ended by claiming that the fight should not take place:“The fight shouldn’t go ahead, in my opinion, the fight shouldn’t go ahead. If he does it, I will give him my respect for that.”Check out Conor McGregor’s thoughts on Paul vs. Joshua below:Oleksandr Usyk fears for Jake Paul’s life ahead of big boxing clashBoxing heavyweight great Oleksandr Usyk also shared his take on Jake Paul moving from Gervonta Davis to fighting Anthony Joshua.Usyk, while speaking to Boxing Scene, predicted a terrible ending for Paul if Joshua wanted it:"If Anthony Joshua wants, he will kill this guy. Listen, a lot of questions, blah, blah, blah. Only one answer, Anthony Joshua. [He] is an Olympic champion, first. Jake Paul, yeah, a sportsman, a YouTuber, a showman. [Joshua is a] Rolls-Royce, [Paul is a] Fiat. Listen, it's true. It's just true. It's business, more money, only this... Yes, I will pray [for] Jake Paul because I want to fight with Jake Paul in the octagon."Paul vs. Joshua takes place on December 19 at the Kaseya Center in Miami. It will be an eight-round fight streamed on Netflix.