RK has already said that he does not want a very large squad, rightly so, he does not want to have to deal with players who are unhappy because they are not being played... the very reason we were able to sign Schneiderlin.
The consequence of this is that players need to be flexile and be able to at least cover a couple of positions other than their favourite.
When considering the players we sign this summer, this must be borne in mind e.g a right sided central defender than can fill in at right back, the same on the other side.
A striker that can play up front but can also play wide , a midfielder that is versatile enough to play different roles depending on what is required.
Strangely.... Rooney would be a great fit from that point of view....if he still is good enough to play in the premiership of course ?
He has played up front, out wide in midfield and knows all of these roles well.