Several fighters have not accepted the opportunity to fight WBC heavyweight champion Tyson Fury.
Last year, the WBC ordered a final world title eliminator between former champion Deontay Wilder and Andy Ruiz. The two boxers were never close to a deal and they appear to be heading in other directions.
Fury's handlers tried to contact Ruiz directly and claim the boxer priced himself out by demanding a purse of $20 million.
The man ranked at three is former two-time world champion Anthony Joshua. Fury's handlers contacted him as well, but Joshua took a pass in order to pursue his two-fight plan - which includes an August return and a potential December fight with Wilder.
Ranked at number four, is undefeated Cuban contender Frank Sanchez, who won't turn down the opportunity to face Fury for the WBC strap.
Sanchez has no issue with the fight take place on UK soil.
According to WBC President Mauricio Sulaiman, a new mandatory challenger is going to be solidified in the near future - and based on his ranking Sanchez stands a very good chance of becoming that man.
"I will repeat what Frank Sanchez has said numerous times - he is willing to fight Tyson Fury at a moment's notice in the US, UK, or anywhere in the world," said the Cuban's co-manager Mike Borao told Sky Sports.
"Mandatories were created for boxers like Frank that champions avoid. I would be overly surprised if Tyson Fury voluntarily fought Frank.
"In my opinion, Frank Sanchez is the best heavyweight in the world, trained by the best trainer in the world, Eddy Reynoso. Tyson probably thinks it is too much risk with easier fights out there, but I'm hoping he proves me wrong."
Sanchez recently reunited with trainer Eddy Reynoso, who is best known for his work with Mexican superstar Saul 'Canelo' Alvarez.