The undefeated American hasn’t fought since defeating Briton Brian Rose at the Barclays Center in June 2014 and was initially informed by the WBO that he must nail down another defense by July 25.
WBO General Secretary Jose Izquierdo has now updated WBN on the situation as it stands after agreeing to a short extension over the weekend.
“On July 15th 2015, a letter was sent giving Demetrius Andrade ten days or until July 25th 2015 to show cause as to why Mr. Andrade has not defended his title under the terms of the WBO Championship Regulations,” Izquierdo told World Boxing News.
“The WBO Championship Committee has now granted an additional five days or until July 30th 2015 as the final day to show cause.”
Andrade, 27, has been linked to several opponents including Australian Anthony Mundine, although disagreements in the contract initially ended talks.
Both sides still hope to reach an agreement after making their intentions public but have just 48 hours to thrash out a deal as Andrade keeps his options open.
Mundine had previously hoped to fight Austin Trout until negotiations collapsed.