The WBC approved Canelo against Yildirim for the vacant WBC super-middleweight title, the only established fight for the Mexican star, even though he has been locked in prolonged discussions with a range of opponents, including British duo Callum Smith and Billy Joe Saunders.
WBC president Mauricio Sulaiman later clarified that Canelo had 'requested' to fight Yildirim, although the four-weight world champion has since issued a lawsuit against promoter Oscar De La Hoya, promotional team Golden Boy, and broadcaster DAZN.
Yildirim has received the support of Premier Boxing Champions, backed by influential American adviser Al Haymon, and the Turkish's fighter's promoter Ahmet Oner has indicated that PBC will participate in the purse bid for the Canelo fight.
Oner replied: 'Yes' to Sky Sports, when asked if PBC could make a sizeable offer.
Sulaiman had previously told The Athletic: "[Alvarez] contacted the WBC and requested to fight Yildirim for the title and that is absolutely one of the privileges he has in having the 'Franchise' designation.