Brown is pretty well-entrenched as Texas's leader for the next half-decade; his current contract with Texas runs through 2016 at about $5 million a year. There has been some speculation that Brown will not finish his contract though, so Athletic Director DeLoss Dodds has made a preemptive move.
If these new rumors are true, it's pretty much a guarantee that Mack Brown will be dictating when he wants to leave rather than Texas doing the same to him. The deal is probably being put in place to ensure the head coach will feel secure as the team leader for the next few years.
I'm guessing if Cal beats Texas decisively though, there might be a change of heart for all parties. Wouldn't be surprised if Texas comes out extra-motivated in this one.
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