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Featured Image Credit: Instagram/PA
Paul has been vocal about his desire to commit to boxing and will step back inside the squared circle on 17th April against former UFC fighter Ben Askren.
Alvarez made his return to boxing late last month and successfully defended his titles against Avni Yildirim at the Hard Rock Stadium in Florida.
Paul has now taken to Instagram to send out a message to his 'haters' and vowed to hit back against his critics with his performance against Askren next month.
The YouTuber posted: "April 17th. Witness. I love boxing more than anything & I respect the sport & have dedicated my life to it over the past two years.
"My goal is to continue to learn, grow, and elevate my competition with every fight... I respect all of the fighters within the sport of boxing... legends of the past, stars of the present, and prospects of the future."
Paul continued by pulling no punches towards Alvarez as he took a swipe at him over his contract dispute with DAZN and Golden Boy Promotions and his previous doping scandal.
He added: "What I don't respect is the haters who try to discredit what I am doing. Haters who have said I am disrespecting the sport...
"Haters who are supposed to be the biggest draw in boxing but can't even fulfill their contract because the media company wasn't making a return on its investment...
"Haters who say they can beat the greatest Mexican boxer of all time in Julio Cesar Chavez (talk about disrespect...) [sic] Haters who are -5000 favorite to win because they take on fighters who have not fought in two years and no-one in the US has ever heard of...
"Haters who test positive for steroids... Haters like [...] Canelo Alvarez... Straight mutherfuckin [sic] hater...
"I'm two years into this sport... you have been at it for 18 years, yet my pay going up and yours is going down.
"[So] focus on you and your brand and keep my name out of your mouth... and in a few years, maybe [I'll] give you a chance to increase your pay again... until then step up and fight guys like [Jermell Charlo], [Caleb Plant], [David Benavidez], [Demetrius Andrade], and the legend [Andre Ward]!!"
Paul has also entered into a heated rivalry with Tommy Fury, who has offered to fight him after the YouTuber's response to Tyson Fury's challenge.