Agree on Nwaneri. I think he will get games next year.
We have Tierney to sell/ give away, and I think Partey will go. We are going to need a new midfielder and possibly defensive cover.
BUT- Arteta sees stuff that we don't and plans things we wouldn't. He'll spend in the summer but it may well take us al by surprise.
As WES says, our biggest addition is another year's experience for the core group. THey are still 2-3 years away from their peak.