Newcastle are going to be new around here after a really long break. They qualified for the Champions League in the 2003/04 season the last time. It must be times with Alan Shearer. Now they don't have one of the best squads in the EPL though. They have just consolidated the squad a little more after the sale of the team.
However this was still enough for them to make it to top 4. But to maintain this level they need to increase the squad quality more than this. Tonali has joined the team which I call a really good transfer to the area between defense and the centre of midfield. He can secure the defense area more as a solid defensive midfielder.
But there is still a need for more transfers if they aim to do some noteworthy things in the Champions League. It is important for the EPL and CL both of course.