The Pac-12 released a statement Friday after news of UCLA and USC's impending departures to the Big Ten in 2014 became official.
"The Pac-12 Board of Directors met this morning and authorized the Conference to explore all expansion options," the statement read, per The Athletic's Matt Fortuna.
"The 10 university presidents and chancellors remain committed to a shared mission of academic and athletic excellence on behalf of our student-athletes."
Washington, Washington State, Arizona, Arizona State, Stanford, Cal, Colorado, Utah, Oregon and Oregon State are the remaining 10 schools.
However, a source told Brett McMurphy of The Action Network that the Big 12 could look to add Arizona, Arizona State, Utah and Colorado to its conference, which is losing Oklahoma and Texas to the SEC but adding BYU, Cincinnati, Houston and UCF.