1) Logical. Possible. No downside. Extremely low probability of happening though.
2) Logical. Probable. Little downside except potentially pissing off Taylor. Reasonable probability of happening.
3) Illogical and highly improbable or a sign of horrific organizational dysfunction. This would mean that Pegula and Whaley just hired a HC who strongly disagrees with Whaley about Tyrod and that they didn't work out that difference prior to hire. Whaley knew what he thought of Taylor during last season. There's been no new information since week 15. From that perspective, a reasonable plan is #2 above, look for someone better or someone equivalent and cheaper, but keep Taylor if we can't find that. So is #1, keep him around and try to trade him until close to deadline. But not having a plan and setting your organization up for a disagreement is nothing but bad.