I don't think this is about number of wins. Because even if he wins 10 or 11, where's he going? You need an opening to create a leverage situation. Ben Frederickson and I did this exercise down at SEC media days. What jobs would Drinkwitz leave Mizzou to take? He's an SEC guy. I don't see him leaving for more than just a few non-SEC jobs. Here's the list.
ACC: Clemson, Florida State, Notre Dame
Big 12: Oklahoma, Texas
Big Ten: Ohio State, Michigan, Penn State (maybe?)
Pac-12: USC, Oregon (maybe?)
How many of those jobs are going to open any time soon? In the SEC, no one's in danger of losing their job except maybe Ed Orgeron at LSU. So, before we even get to answering how many wins it will take for him to leave, we need to ask who's going to be in the market for a coach? Michigan perhaps. Maybe Oklahoma if Riley jumps to the NFL. USC? Helton's on the hot seat every year.
But, again, any decision Drinkwitz makes about his future will be measuring his ceiling at Missouri vs. his ceiling somewhere else.