Pep has played Bernardo at LB, Nunes at LW, Gundog at RW & introduced the inverted defender. Grealish is quicker than most realise & can retain possession.
When he came here & was made to change his game to retain possession, it baffled many including myself, what was the point in his signing. Then I saw the stat that Grealish was the king of assisting the assister. He was streets & lanes ahead of everyone else in the PL, which must have had a major bearing on our decision to trigger his £100m buy out clause.
In the absence of Rodri & a viable alternative, I don't see Jack as a No 6/8 being a square peg in a round hole. I honestly believe he'd be more use to us in this crisis playing centrally, than being unproductive on the bench. IMHO, he'd offer more centrally from deep than Kovacic, Gundog or Nunes.