It is understood that a fight between Brook and Gavin has been agreed and could even be signed and announced officially by their promoter Eddie Hearn before the end of the week.
The bout would see Gavin earn a career-high payday – although nothing close to the millions allegedly offered to Khan – when he challenges Brook at the O2 Arena in London on May 30.
The world title bid is a huge step up for Gavin, who won gold at the World Amateur Boxing Championships in 2007. However, the 29-year-old from Birmingham is confident his pedigree will give him an excellent chance of dethroning the unbeaten Yorkshireman.
“I’m not stupid. I’m not delusional. I’m going to have to perform out of my skin,” Gavin said. “But I’ve definitely got it in me to do it. I’m very confident Kell can be beaten and hopefully it’s someone with my skills who will do it.
“Nothing is signed or done yet but I know Eddie’s spoken to Kell and Kell’s up for it and I’m up for it. So we’re going to sit down and have another chat in the next two days and hopefully get it done.
“I think I’ve got the skills to upset Brook and take him out of his rhythm. It’s easier said than done but I’m going to be 100 percent ready, physically and mentally, and if I get that world title shot I’ll be ready.”
Gavin also suggested that former amateur team-mate Khan has elected to play it safe by avoiding Brook and instead choosing a fight against Chris Algieri as he continues to chase a shot at Floyd Mayweather.
“I don’t know what it is with Khan,” said Gavin. “Listen, he’s a clever man, he’s got money, he’s done well, but I don’t think it’s a clever move to turn Brook down and fight Chris Algieri instead.
“It’s a no-win situation. He’s going to smash Algieri up whereas Khan v Brook is a very close fight. If Brook gets to him and starts landing shots, he beats Khan. If Khan uses his speed and rhythm, he wins it.
“Maybe Khan just doesn’t want to risk losing the Mayweather fight and he knows he won’t lose to Algieri so it’s safer.”