Not really worried since he's proven he belongs at this level and there's no manager available that does for us what he does. I share the idea that the new owners should not be involved in player recruitment, but I think there's a big difference between us and PSG. At PSG, they NEEDED those star players. That massive Mbappe contract and even the president of France getting involved in keeping him tells you all you need to know about the state of Ligue 1. They need stars, because otherwise no one outside France really cares. Messi and Ramos in the wrong end of 30 only to create some buzz. Also they have made massive moves that I'm really jealous of, to be fair. Hakimi, FA Skriniar, Donnarumma, Thiago Silva and Marquinhos before he went shite.
Sure, we did this "create some buzz" type transfer with Ronaldo, but the situation was a little different. Our rivals were about to scoop up a club legend (performance wise he's surely one?) and we needed a striker anyways. It was a poor choice in the end but at the time I was all for it. We didn't have a real scheme or playstyle anyway like under ETH to say he wouldn't fit us. I'd say we learned our lesson.
Just because PSG runs in a certain way does not mean we will make these same types of moves as they do. Once again I understand the fear of it, but I doubt it'll happen. I think the new owners will back ETH and give him whatever he wants to succeed. People also automatically assume that he's gone once we go on a poor run but what is a poor run? Seeing as Klopp and Potter still have a job, and I doubt Erik will experience a downfall like that. In my mind he's simply to good to let something that extreme happen.
He also has the benefit of being in not just one but two big competitions. At Paris it's CL or bust because they'll win the league anyway. In the PL, that is not a certainty given the massive competition. Let's say for the sake of discussion, next season he will end up 2nd place and a quarter final in the CL. I don't think they'd sack him for that, but that's just me. I feel like some people on the caf who criticize Qatar for the human rights violations (you are right to do so) also automatically portray them as owners without sense but I think they know damn well ETH is untouchable at this point in time and for some time to come.
Tldr: he's not going anywhere because our baldy is simply too good and the situation is different to PSG.
...Also we don't choke 5-1 leads.