The Buttner deal is important is we are to improve. It appeared that Shaw played in a more advanced role tonight, and both Fox and Buttner (from what we've seen on Youtube, admittedly) like to get forward too and can both play in LM so they can all cover Lallana.
The 4 lads, Stephens, Shaw, Ward-Prowse and Chambers weren't promoted to the first team for the sake of it. They're all very talented and I'm sure that in the cup games this year, they'll all be in the starting X1.