Well, if you look at the players we have 'mid-long term'
LW -- ?? /??
DM -- McCarthy
CM -- Besic/Cleverley
AM -- Barkley / Tarashaj
RW -- Deulofeu
CF -- Lukaku
i would think Torres could play on the left/right and also as a deep lying playmaker. Both he and also Cleverley would fill the need for any further signings centrally and also act as cover for LW/LM. So with the addition of Yarmolenko our midfield long term would be pretty much complete.
Also, and perhaps
@bluestevon may be able to confirm this, perhaps Yarmolenko could also play up front if needed?
If so then we'd see a huge upgrade in quality not only in terms of positions but also in depth. Would be amazing.