The Horns 247 staff did an extensive article last week explaining in considerable detail the lengths that Mack Brown went to in order to convince Bill Powers and and Steve Patterson to scuttle attempts to hire Saban in 2013. While Mack's supporters try to cast doubt about whether Saban could've really been hired, if Saban wasn't a strong possibility, why would Mack be personally campaigning so hard to keep Saban from happening As for claims that Saban may have been just playing Texas for more money, the contract terms Alabama published were the same he had been offered several months before Texas entered the picture.
What the 247 article points out is that Mack, Powers, and Patterson, each acting for their own selfish reasons, were responsible for scuttling Texas' chances to hire the greatest coach in the history of college football.
You can't consider the state of the program over the past 4 years without pondering how much more improved it might have been without the self-interests of 3 individuals, all of whom would be out of power at Texas in less than a year.