By Rick Reeno

Top Rank's CEO Bob Arum has advised BoxingScene.com that his company is currently working on a doubleheader that features two of his top stars - WBO super bantamweight champion Nonito Donaire (28-1, 18KOs) and former WBA lightweight king Brandon Rios (30-0-1, 22Kos).

The doubleheader, according to Arum, will take place at the end of June or early July. The opponents have yet to be finalized.

A date of July 7th, at the Home Depot Center in Los Angeles, had previously been mentioned for Donaire. If that becomes the actual date, the card will likely go to Showtime, since HBO is televising the return of Amir Khan. However, Khan's card is also being positioned for the Honda Center in Anaheim, which probably rules out a Los Angeles venue for Donaire/Rios, at least for that date. Everything should become a lot clearer in the next week or so.

Former champion Cristian Mijares (45-6-2, 21KOs) appeared in the Mexican press on Friday and still believes that he'll land a fight with Donaire in summer.