Its very strange, we do appear to be focusing on mainly number 6s, which IMO was the 1 position we had enough players in, granted some of those players are very limited, so whilst im not as anti-McCarthy as some, Witsel is most def an upgrade on him, but it still doesnt "solve" the issue of no number 8s in the squad.
Saying that, some of them are borderline, Strootman, Witsel and the boy Morgan all have much, much more to their game than McCarthy, all have a better passing range and can all shoot.
Just makes me wonder whats going to happen with the players we have, Barry, Gibson, McCarthy, The Clev and possibly even Besic would struggle for games if we signed Strootman and Witsel and IMO it wouldnt solve the major issue of creativity in the middle of the park, which would suggest to me that Barkley will be "turned" into a number 8.
Its hard to say how Koeman will set us up, hes not rigid, he adapts his formations and line ups, but he will have a preferred set up, it doesnt even say that it will be the same as it was at Southampton, its probably gonna take a few games to see how we will set up for most of the season.
Koeman has certainly seen which area is lacking, its gonna be a very interesting few months.