You play them, but minimise the time they'll be on ball or competing against bigger stone players. Eg I'd put a Whitlock in a forward pocket next to Lynch and Kosi, rather than have him replace Kosi. I'd put FOS on a HFF and give him cameos rather than have him replace Dow or Prestia in the middle (for example).
Reckon whoever we pick will be an immediate upgrade on Dow in the middle and probably already has a stronger body, either way as long as they don't end up like Ross & Sonsie and are never seen in the guts again.