Kell Brook's trainer has left fans disgusted after drinking the fighter's sweat during his preparations for his grudge match with Amir Khan.
The British star has returned to Sheffield for fight week after training in a warm-weather camp in Fuerteventura during the festive period.
He has returned to working with long-term trainer Dominic Ingle after previously splitting with him for his fight with Terence Crawford.
A video emerged on Sky Sports documentary Behind The Ropes of Ingle encouraging Brook for his fight with Khan, and he said: "On the 19th you are going to get the blood and the tears from Khan, you can give me the sweat instead. Am I alright to put this on Ebay?"
Brook drained a towel into a glass and joked around telling his trainer Ingle to "down it".
Ingle agreed to it and drank the sweat before showing the empty glass to the camera which left fans mortified, with one fan commenting: "This is my cue to get off Twitter, absolutely disgusting."
Another fan ranted: "Aside from the fact that there’s no need to do this and it doesn’t do anything for the fight itself, it’s also unhygienic and making them look like they’ve lost their head.
"You really have to hate someone to go to these lengths! I’d hate to think what they’d down if they won."
One fan claimed: "This is the worst thing I have ever seen."
Another agreed: "Made me want to vomit, how are you just drinking another man's sweat from a glass like that?"
A fan used the video to back Khan: "This genuinely is one of the most disgusting things I’ve ever seen. Amir has this whole team on strings."
One fan believed coronavirus would play a part: "A new f****** covid variant was created after this."
Who will win the grudge match - Amir Khan or Kell Brook? Let us know in the comments section below
Brook is set to face Khan in a huge domestic showdown on Saturday as he looks to finally settle his rivalry with the former world champion.
The pair have continuously feuded during the build-up to the fight and vowed to put at end to each other's careers as they approach their twilight years.
A bumper crowd is expected in Manchester with the tickets selling in a record-breaking time of just ten minutes.
However Brook believes the majority of fans will back him after receiving several private messages of support.
“I know me and him are not gonna see eye-to-eye, that is common knowledge," Brook said. "I am getting the message that everybody is behind me, the truth is out now.
"The truth is that he didn’t want the fight all that time and it’s me who wanted to give him that fight.
"I have been getting messages on social media like 'good luck' and it is all positive. I know he's going to have his fans but the majority will be behind me."
