Newcastle to become a strong team does need a lot of changes in all sectors, in addition to the coach and players that must be improved, Newcastle must fix other sectors including management and directors. Marc Overmars is a strong candidate for director of football, and Paulo Fonseca as strong candidates to fill the coach. If these two great men succeed in bringing in Newcastle, I think it will make a big difference for Newcastle. We know how Ajax's performance is currently so extraordinary, it is not only the contribution of Erik ten Hag as a coach, but also the role of Marc Overmars as director of football for Ajax is quite large. Then many people doubt the ability of Paulo Fonseca, even though if we look at his overall track record as a coach is quite good. Indeed, when he became coach of Roma did not give any trophy, but when he was coach of Shakhtar Donetsk for three seasons he managed to give 7 trophies for Shakhtar Donetsk. So if Fonseca becomes Newcastle coach that's a good thing, I believe Fonseca can get Newcastle out of the relegation zone.
I am sure after being owned by a huge billionaire, richest football club owner as far as we know, I am sure they could do even a full on new stadium and training facilities and youth setup as well. Look at City, they are a great team that spent money, but now they have a great youth system that promotes players like Foden, all thanks to spending money on youth setup.
I believe Newcastle will definitely want to win something right away, even if not a cup, at least be at the top or around so that they would look different. This means they will need to spend a lot of money on manager, players, staff all around and so forth but that doesn't mean that they won't plan for future, they will try to spend money on those stuff as well which will be a lot of money but they will be able to do it for sure, I believe they can spend that much money on it if they want to.