I was just going to post this.
Reading it Koeman seems to believe, has I do, we have some real talent coming through, possibly for this season, but definitely next season.
With that in mind, unless someone special comes up, there will be no more signings.
...I imagine it's more to do with this than any claim that we've got a good crop coming through;
http://www.evertonfc.com/news/2017/01/27/blues-vow-to-get-best-talent
There appears to be a clear strategy to acquire young players (as we have done with Stones, Calvert-Lewin, Holgate, Galloway etc). Low risk purchases with the potential of very high reward. I suspect we'll see lots of this type bought.