Gus over Jimbo, for sure.
Either way, I cannot think of why either of these guys would leave their positon.
I know what Gus said about "dream job" and that we have the most money, but if Jimbo wins the MNC, which he's very favored to do so with two games left, no one just leaves a team after that unless it's like to the NFL for something.
And Gus will definitely want to stay, because he rebuilt what was trash literally the next season, and probably wants to see what he made to the end. Especially if they don't even go to the national championship game this year and bring a lot of starters back next year.
God, hopefully Saban can just come out and say he's coming soon.