From Fightnews.com;
The WBC ordered by unanimous votes that the mandatory defense of WBC middleweight champion Julio Cesar Chavez Jr. has to be against the diamond champion Sergio Martinez but also allowed that if both parties reach an agreement, they can have voluntary defenses and then the winner of each bout fight between them for the WBC title. Chavez Jr called WBC President Jose Sulaiman to ask his approval for his voluntary defense on February 4, so the Sulaiman called Sergio Martinez who accepted that Chavez Jr. be allowed to fight because he will also fight in March, so both boxers agreed to a fight between them after their voluntary defenses.

My thoughts:
I applaud the WBC for forcing Chavez Jr’s hand and making the next defense of his title against Sergio Martinez, but it doesn’t really matter what they do. If Chavez Jr refuses to take the fight against Maravilla then Chavez Jr will just be stripped of his title.
Stripping a fighter of his title used to mean something. That has gone by the wayside these days. I realize this is a generality, but most boxers don’t care for titles like they used to. Oh sure if they win one it’s an extremely exhilarating feeling, but now they care more for how many zero’s are at the end of their check.
Chavez Jr’s own people said they wouldn’t want to take a fight with Maravilla because it isn’t worth it to them monetarily. In other words, they know Martinez would expose Chavez for the mediocre talent that he really is.
I would be thoroughly surprised it Chavez Jr actually steps into the ring with Martinez, so would Top Rank (Chavez Jr’s promoter). He will most likely
The better match-up, in my opinion, would be a Julio Cesar Chavez Jr vs. Saul “Canelo” Alvarez fight. It would be The Battle for Mexico and would probably shatter all sorts of Mexican viewership/gate records.