Francis Ngannou's exit from the UFC has opened up an opportunity for a potential boxing matchup between him and Tyson Fury.The two camps have expressed interest in making a fight happen and the matchup is sure to be a blockbuster event in combat sports history. Boxing legend and former heavyweight champion Mike Tyson responded to a question from a TMZ reporter about Ngannou's chances against the WBC heavyweight champion.'Iron Mike' curtly said:"Anything is possible."Right after Ngannou vacated the heavyweight title and left the UFC, Fury called him out in an interview. The 'Gypsy King' also suggested a special guest referee for the fight with Mike Tyson."Francis Ngannou, I know you're out of contract with the UFC. Wanna earn some big boy money? Come see the Gypsy King and let's do a big, big fight for the baddest MF on the planet. And let's kick it up spicy, in a cage, four-ounce gloves, under Queensbury [boxing rules], and let's have a badass referee like Iron Mike Tyson. Ooh, did I just sell that to the world?"Check out Fury's call-out on Twitter:Combat Sports UK@CombatSportsUKTyson Fury wants super fight with Francis Ngannou81Tyson Fury wants super fight with Francis Ngannou😳 https://t.co/stZJXQvdowMike Tyson also fielded a question regarding guest refereeing the matchup but refused to reveal anything conclusive:"Yeah, you never know."Check out Mike Tyson's interview with TMZ below:John McCarthy is impressed by Deontay Wilder calling out Francis NgannouFormer WBC heavyweight champion Deontay Wilder has extended a two-fight contract to Francis Ngannou, offering to square up in the boxing ring and also fight in an MMA matchup.Former MMA referee John McCarthy spoke about Wilder's callout in a recent episode of his Weighing In podcast."That's pretty impressive, I kinda like that. That's a tit-for-tat... We all know Denotay Wilder as a boxer. Man, he has got power, he has got a big right hand. Ngannou is gonna be a lot bigger than him because Ngannou used to cut [weight] and Ngannou is a bit man, super strong, not saying Deontay is not. But in MMA, Deontay is gonna have problems. But in boxing, I think Ngannou is gonna have problem. So it goes back and forth both ways, but I would love to see this."Check out John McCarthy's comments below:Francis Ngannou himself responded to Deontay Wilder on Twitter and voiced out his hope that the former WBC champion will stick true to his words.Check out Ngannou's tweet below:Francis Ngannou@francis_ngannouWelcome to the free world @BronzeBomber. I hope you are a man of your word. See you soon #NgannouWilder twitter.com/MichaelBensonn…Michael Benson@MichaelBensonn Deontay Wilder has declared that he is now an "open agent" and "taking full control" of his career. He said: "No bad blood. I'm still part of PBC. I'm just an open agent, open fighter. I want to fight on all types of platforms, I'm willing to work with anyone." [78SPORTSTV]2424178‼️ Deontay Wilder has declared that he is now an "open agent" and "taking full control" of his career. He said: "No bad blood. I'm still part of PBC. I'm just an open agent, open fighter. I want to fight on all types of platforms, I'm willing to work with anyone." [78SPORTSTV]Welcome to the free world @BronzeBomber. I hope you are a man of your word. See you soon 💨💨💨 #NgannouWilder twitter.com/MichaelBensonn…