I'm not so sure on that one. I think the virus quarintine had a major impact on Coyle's decision. The world, including college basketball, is at a standstill. Not likely a coach with much character is going to abandon his team and university in a crisis either. There was little chance of Coyle bringing in a current A grade experienced head coach in this environment. He may have gotten an assistant to move if that was on the radar. Nothing in terms of player movement in the off season would surprise me.
The effect that the current situation had on things cannot be overstated. In an average year you have 5-8 major conference jobs come open. We are at 0 right now, and I'd be shocked if there end up being more than 2.