Honestly, if the Cowboys have a first-round exit and McCarthy loses to the Packers (again), I don't think it would be surprising to see him kicked to the curb.
2 weeks ago I read they were talking about a contract extension.
I don't think Jerry is going to fire a coach who won 12 games three years in a row. Especially the way Dak is playing right now and crediting McCarthy with a lot of his success.
The only exception might be if Bill Belichick is fired and he works out a deal with him behind the scenes in my opinion.