I know it probably sounds like I'm on a mega moan here, which I don't like doing, but we have a squad full of players who basically aren't very adaptable. If you put them in their optimum position, with the right players around them, they're great. But you ask them to do something slightly different, or change partner, or play a different way and they fall apart. We are well in contention for top 4 currently, but it's a castle built on sand. We shouldn't be getting complacent at all. This is probably why most of our players aren't at top clubs.
Within that, there is obviously an understandable criticism of both the recruitment, and the players themselves, which is an important discussion but also a seperate one in this instance.
Then you have Ancelotti, who I have concluded at times can't shift that he's not manaaging Real Madrid, (or peak Chelsea or Milan). This isn't asking Casemiro you're asking to do a job out wide, or Malouda you're asking to go from left to right- where you know they still give you a a base level good performance, and to use a football phrase "do a job" for you. Our reserves are also not of the same quality as those sides had, and in honesty the mindset of our reserves being good enough to defeat teams just doesn't exist.
So to keep weakening the team against poorer teams, and shoving people out of position (or giving them over complex half and half jobs) just seems to baffle the players and it really needs to stop.
At the risk of straying, it's a big reason why I've become so defensive of the 4 CB thing. At least we have some evidence it works and the players look fairly comfortable in it. With this team, for who'm 8 or 9 of them I would say struggle in anything other than their prime position, to have stumbled upon a bit of balance is a bit of a miracle. It will be a bigger miracle if we can do it again, especially if we keep changing it every week.
Most of the lead up to that is not Ancelotti's fault, but how he deals with it is on him. If he doesn't fsncy four CB's fine but at the very least we need simplicity, consistency in selection and people (where possible) playing where they are best suited.