I dotn know, not sure on the balance myself.
Initially I just imagined the regular 4-2-3-1 with him taking the right of the 3, which means Eriksen or Lamela on the bench most likely.
Which immediately sets the question marks.
Hence, for me, him at the top instead of Kane was the most natural fit for him. Though obviously unsacceptable.
Though aside from the "where will he play" line, the "will he play" line was alway my primary "Why bother?"
We all know he'll only be available fleetingly, and to bring him in at such expense would likely be a compromise too far.