I could see nobody playing 'upfront'.
I suppose it depends on whether Pep thinks Kelechi's goalscoring potential is essential or not.
But if you look at their cbs, Blind, if he plays, would like to get on the ball, but the other guy wants to sit there marking someone, he's a defender, end of, & his man would likely be Kelechi. But if Kelechi isn't there, what does he do ? People coming from different angles running into areas instead of being there to mark. And has he ever played in that situation ?
Interesting conundrum.