Could Crawford-Postol be derailed at this point?

Crawford-Gamboa-140628-001aTerrence “Bud” Crawford made a huge splash in the boxing scene in March of 2013 when he filled in as a late replacement against Breidis Prescott. Crawford was able to dominate,  outbox and pick apart his opponent to a ten round unanimous decision. Since that victory,  Crawford has gone 8-0, 5 KO’s including victories over big name fighters including Yuriorkis Gamboa, Ray Beltran, and Thomas Dulorme.  Those victories have cemented Crawford’s spot as the top junior welterweight in the game so what is needed for him to keep him atop of the 140 pounders?
Six months ago, a battle was waged at the Stub Hub Center in Carson, California between Lucas Matthysse and Viktor Postol for the vacant WBC junior welterweight title. Postol was able to stop Matthysse and secure his spot amongst the top fighters in the division along with the title and hoards of new boxing fans.
With Postol’s victory over Matthysse talk began to circulate (for a second time) about a possible fight with Crawford to determine the king of the division which could happen last year.
“Before this fight (Matthysse), nobody knows this, but I had an offer to fight Terence Crawford for his WBO title,” Postol told late last year.  “I had a choice, to fight Matthysse as a mandatory or to fight Crawford as an optional for the WBO title. And we said yes. We said yes to the fight, but they changed their minds and Crawford didn’t want to fight me. I don’t know why, but I’m open to fighting him right now.” 
Earlier this year Crawford told ESPN that he is interested in fighting Postol and the two may get the chance to square off on July 23rd. Crawford recently spoke to Tha Boxing Voice and stated that he has already agreed to fight the “Iceman” and now the fight becoming a reality rests on Postol. 
“I agreed to the fight [and] now it’s his job to agree to the fight. I’m [gonna] leave it at that.”