If we pay a small price for nankervis , worthy of a depth player and give him no promises about playing time then sure.
But realistically Sydney will look to squeeze a pick from 30-45 for him and he will be looking for opportunity. I've seen nothing to suggest a Dixon westhoff nankervis forward line will be anything other than a train wreck and far too top heavy. So while it might be nice to consider him sitting in the wings for life after Ryder or for insurance he will be looking for playing time, and any club that brings him in is likely doing so having promised him some chance of that.
As I said , I see no chance of him improving our first 22 unless he is a good mobile forward , which doesn't sound like him at all.