He might, but that's also on Phoenix's blue line. The 4 guys they have under contract right now are OEL, Goligoski, Michalek and Pronger.
Detroit will have 4 guys under contract for at least 24 months who will all be playing ahead of him in Green, Kronwall, DK and Ericsson, and at least 3 out past Green (assuming he is not re-signed).
There's almost no situation where Chychrun helps Detroit at the NHL level in 17 or 18, and probably not even 19. At that point we're just talking about having the guy we got being developed by 20 or 21 vs. the guy we needed to let go to offload PD's poison pill of a contract being maybe ready in 19.
Not a huge difference.