Kell Brook is being lined up to fight Brandon Rios on August 29 rather than his British rival Amir Khan at the Millennium Stadium in Cardiff later this year.
Brook's promoter Eddie Hearn is confident of matching the IBF world welterweight champion against American Rios and wants the fight to take place at Bramall Lane, home of Sheffield United.
Brook, 29, called for a big-name opponent after he comfortably beat fellow Briton Frankie Gavin in the sixth round at the O2 Arena in London on Saturday.
After two unthreatening defences of his world title, Brook now wants a higher profile fight but has grown "bored" of talking about the prospect of fighting Khan, who unanimously out-pointed Chris Algieri in New York on Friday.
"I want big fights and I want people to take me seriously," Brook reporters after beating Gavin. "I am world champion. I want to prove that I'm No.1 in this division.
"I'm after big names in the summer. I'm fit and well and it's a short window you have as a fighter so I want to bring some big dough in. Rios is a big name. He will come to fight. It is what we need to get the bigger fights.
"Winning the belt I thought it [the fight with Khan] would happen. It is boring. He said 'win a world title' but I've done all that and he has still not picked the phone up yet even talk about terms. I'm doing my own things.
"He must be scared, why wouldn't he fight in an open aired arena against me for a load of money with a belt on the line?"
Hearn has grown exasperated at failed attempts to make the fight with Khan happen, but is hopeful a deal can be done with former world lightweight champion Rios.
"We are targeting August 29 and I would to do it at Bramall Lane. Rios is still my preferred choice because he is the perfect fight style wise and entertainment wise," Hearn told a press conference.
"Bob Arum and Top Rank still want the fight. We made one offer, they turned it down now they are considering a second one. I think we will get it done.
"I've lost passion for the Amir Khan fight because it seems so far away. Khan is just scared of fighting Kell because of the potential of losing and what it would do to his career. If they lose to Kell they won't get Mayweather or Pacquiao.
"We could do the Millennium Stadium in October or November. If we got the Khan fight we would wait until October or November but we haven't got long. We probably have about a week until we get Kell's next opponent signed."
On the same bill in London, Welshman Lee Selby produced a sublime performance, showing off his array of skills and fast hands to leave California-based Russian Evgeny Gradovich befuddled. Selby won a technical decision in the eighth round for the IBF world featherweight belt after Gradovich was stopped by a cut sustained in an accidental clash of heads. After Selby was adjudged winner by unanimous scores of 79-73, 80-72 and 79-73, he dedicated victory to his dead brother Michael.
"He definitely would have been proud of that performance and I believe he is looking down on me every day and smiling," Selby told reporters.
"He passed away in 2008. He was working away and he was with a friend. They were out drinking and had a bit of an argument, then they went their separate ways and he slipped into a ravine and drowned. I think about him every day."
Anthony Joshua, the 2012 Olympic gold medallist who moved to 13-0 - all by stoppage inside three rounds - with a second round win over American Kevin Johnson, who suffered his first stoppage defeat. After his most impressive win yet against a former world title challenger, north London-based Joshua is now being lined up to face either of his domestic rivals Dillian Whyte or David Price back at the O2 Arena in London on September 12.