Let's say you fire Getsy, keep Fields, take MHJ at pick 3-4-5 after a trade-down, and next year Fields looks pretty much the same as he looks this year and also the last two years? A dude who's explosive, makes great plays with his legs. Is mediocre in the passing game. Has terrible numbers in the fourth quarter and clutchtime. The defense is still good, but even with a new OC and MHJ Fields looks pretty much the same. You go 9-8, pick at 17 or 18 with another pick around 6-10. Now what? You're back in the QB lottery. It seems like a big risk to take to guess that Fields will make some huge jump in year 4 with a new OC. It's possible, no doubt, but I think that's often presented as a 'safe' option, and I think it's at least as risky as trading him and taking a shot on a top QB prospect.