Newcastle United is a rich team that did not decide to spend a lot of money on the transfer of big players. Not many famous players come there. It seems that they are comfortable in the current state. They prefer players who work hard for the team, not star players. Of course, if you want to get good achievements in the EPL, UCL and league cups, Newcastle must have a balanced team between main players and substitutes. The current conditions don't show that, but it seems that if they don't have other transfer targets it will be difficult to stay in the UCL.
Newcastle United seems not spent much money active in summer window transfer and current signing is Sandro Tonali from AC Milan with €50.00m, I don't think is enough with one best recruitment for Newcastle United participants in Champion League. Actually its the first appearance for The Magpies after absent for long time and should have quit well perform if want qualify to group phase. Less transfer activities from Newcastle United after success signing Sandro Tonali and next season have defend on top fourth standings position in Primer League then get good achievement in Champion League.
Rumor has it that Newcastle only spent €75m in this transfer window and the most expensive was Sandro Tonali to strengthen their midfield, of course I don't know how big their budget is but Newcastle are not too extravagant they seem to want to start from the bottom even though their club is now rich from the new owner.
We have to see how they perform in the UCL and Premier League competitions if the club gets a drop in their performance then the manager must be able to change the scenario but this depends on Eddie Howe as the coach, he is still quite confident with the squad at hand still maintaining the quality of his game but if they manage to qualify from the Champion League to reach several phases then Newcastle is still quite successful even though in the end it must be eliminated.