Newcastle had qualified for the Champions League the previous season. So they had ample opportunity to strengthen the squad by adding star players to their squad. Because star players will not only come to Newcastle to play in the Premier League, they will definitely want to perform in the Champions League. It is more honorable. But the Newcastle management did not try to bring any star players into the team. And their performance this season has been poor. Qualifying for the Champions League is almost impossible for them now. Now I don't think coach Eddie Howe will be able to add any first class star players to his squad.
Newcastle United not improving yet with their current squad exactly have to play in Champion League just made few transfer only, signed Sandro Tonali but faced problem with illegal gambling activities and have been absent more than one season with Newcastle. Actually when participating in Champion League for the first time Newcastle United have many option with their players and the same level performance between main and reserve players, but when some main players get injury Newcastle United get difficult to stay on consistent performance.
Current condition of Newcastle United right now losses or eliminated from Champion League and not easily for finishing on top fourth standings position for this season behind previous season success get one ticket for playing in Champion League.