Big 12 Commissioner Brett Yormark confirmed the conference is open to further expansion with the Pac-12 reeling from the departures of USC and UCLA.

"We are exploring all options, and we are open for business," Yormark told reporters Wednesday. "I think it's fair to say I've received a lot of phone calls, a lot of interest. Nothing is imminent."

CBS Sports' Dennis Dodd reported July 5 the Big 12 was "involved in deep discussions to add multiple Pac-12 programs." Dodd cited Arizona, Arizona State, Colorado and Utah as potential targets.