I think Pep is looking at how to build a team without Kun in it. (or any recognised striker)..he clearly has had this idea for a while and he is using Kuns absence to experiment with different options...if the rumours of messi are true (and we did get him) then again this could lead to us playing without a recognised centre forward (unless you class Messi as one)...I thikn Pep is quoted somewhere as once saying that if he could pay with 11 midfielders on a pitch he would ...I know this is an exaggeration but you can see what he means the way he likes his players to paly in multiple positions and have the skill set to do so:
GK's that can pass like a midfielder
Full backs that play in midfield
Centre halves who can pass through the lines
Forwards who can play mulitple positions and drop deep and link play
Players like Foden, Bernardo Silva etc etc are dreams for Pep because they can do this...I think i heard the other day that Pep said that Foden when much more experienced will play as a defensive midfielder (or with amuch more defensive role anyway)
I dont think he will go the whole hog (ie he will have a forward like GJ for instance) but I think his ideal wouldnt be too far off this.
It would be interesting to pick Pep's mind to see if he coud have ANY player on the planey in any position from any current playing what/who would he have......????