we need stability. there is no guarantee anyone else will succeed. Give BR the time to prove himself one way or the other. One more season at least, maybe two.
So if Ancelotti came knocking, we would say - sorry Carlo, we know you are one of the best managers in the world, but we need to give Brendan another 60 million and see if he can get us out of mid-table next season.
Or
sorry Rafa, I know most of the best performers over the last few years are the players you signed and the best youngsters coming through are your signings as well and we know you had the team performing in the Champions League nearly every season, but we can't take the risk, we need stability under a manager who has never won anything in his career.