Kell Brook wants a world title unification bout with Floyd Mayweather, who he says will "convincingly" beat Manny Pacquiao.
IBF welterweight champion Brook, 28, faces Romanian Jo Jo Dan on Saturday.
Mayweather holds the WBA and WBC belts in the weight class, and Pacquiao is WBO champion ahead of their 2 May bout.
"On 3 May there will only be two men in the division with world title belts. I would love to do a unification with the winner," said Brook.
"I do belong at that level. I know at 100% I will beat any fighter," he added in a BBC Radio 5 live interview which will be aired at 22:00 GMT on Wednesday.
"I see Mayweather winning the fight. He believes he will win with a passion. Pacquiao has lost before and can lose again.
"Mayweather can control the pace and is a brilliant defensive sharpshooter. For me he takes over the fight halfway through and wins convincingly."
|Kell 'Special K' Brook|
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If his hopes of a meeting with Mayweather or Pacquiao are to gather traction, Brook must ensure he comes through his first world title defence against mandatory challenger Dan in his home city of Sheffield.
It will be his first outing since being stabbed while on holiday in September, three weeks after winning his title with victory in California over American Shawn Porter.
Dan, 33, beat Canadian Kevin Bizier to earn the title shot and has a record of 34 wins from 36 fights, with 18 victories by stoppage.
"Mandatories come along and you have to deal with them," added Brook.
"He's earned his position like I did against Porter, so he gets his chance to take that title off me - but that's not happening.
"I am not looking past him, but I know that there are massive fights out there for me in the division and after I take care of business tonight, I am free to fight anyone."