Newcastle boss Eddie Howe was delighted with their summer market work.
The Toon host Crystal Palace on Saturday.
Howe said: "A very good window for us, I think. From my side, I had a clear vision of what I wanted it to be and it's never perfect but from the board down everyone's given their all to create the best squad possible.
"I found the window to be very difficult this year - it was very long. I'm pleased it's shut and we can concentrate on the football. I'm very pleased with the squad that's there."
On record signing Alexander Isak, the manager continued: “The players have taken to him. He's quite quiet and he's going about his business in a professional way - he's very focused. He's asking questions about how we want to play and what's required of him - he's been excellent.
"I think that showed in his performance on Wednesday. It was one of really good tactical understanding in a very short time he delivered what we wanted him to do. He showed his ability and the second goal that wasn't given especially was incredible."