My thoughts:
Amavi clearly the best signing of the lot, too good for us so very happy to have him.
Midfield has been pretty much sorted for me, some good passing moves and quite a bit of bite in midfield which you obviously need in the premier league.
Up front is where I am worried, Ayew I just don't get that signing, from what I have seen on YouTube and the full 90 minutes from both games this season he just doesn't have what's needed, looks lightweight, no power in his shots, not very good in the air, looks like another weimann which has cost us 10 million to me.
Don't think we will be in a relegation battle this season.