Well if that is our concern now then i don't know why we even scouted him a bazillion times because that was quite obvious from the start.
I don't think he is just a poacher, he doesn't only play in the box and when it comes to technical abilities and speed he isn't bad. If we speak about a "real 9" at least, not compared to players like Griezmann of course. Even guys like Kane or Lewandowski are poachers then thats just how most strikers play so we'd have to look for a completely different type of forward, but these also most likely won't score like Suarez from the get go and don't have his physical presence. Perfect fit doesn't seem to exists at the moment.
I think it's more about the seemingly rising price and that Suarez was playing better the last weeks than say 3 months ago so we probably don't see the need to sign a player that can only play as a lone striker in our formation for 70+ mil right now, especially since it looks like we're finally closing in on De Ligt for another 60-70M.