He will leave of his own accord, but there will be a significant push from a portion of the fan base for his departure.
In the beginning, the NBA factory was okay because the fanbase was drunk on the bliss of being renowned nationally again. But after his recent quotes about not really being concerned with "winning college games", but instead getting players prepared for the league. If this class ultimately flops and next year is average, Cal will be looking for the exit. He doesn't deal well with internal criticism.
If they turn it around (and they certainly can, too much talent and too early in the season to count them out) I would retract my statement. We shall see.