UPDATE: Cowherd on Kall 700 said Utah will be a member of the Pac-Ten soon. How soon? Well who the hell knows. But the Big Ten expanding is forcing the Pac-Ten's hand and it's Utah. Colorado might be the second option, but it's not entirely out of the question that the Pac-Ten just expands to 11 teams for the time being.
On his radio show today (sorry, no link), Colin Cowherd said his sources say Utah to the Pac-Ten is not only a lock, but a done deal and announcement is forthcoming.
I expect a bit more clarification around 3:30, as Kall 700's Bill Riley will have him on his show this afternoon. You can listen live here around that time.