I think Kreider would fetch a significant return. Say what you want about his play this year, but he still has 15 goals in 41 games (30 goal pace).
Kreider is much more difficult to move for sentimental reasons, though. He has been here forever and he's working his way up some significant all-time Ranger lists. Then again, we traded Leetch before he could break Howell's games played record, and Drury has shown himself to be pretty cutthroat when it comes to making moves.
Ideally, we would move Mika and keep Kreider, but I don't know if that will be possible.
I think Lindgren will depend on the return. If the offers are good enough, maybe Drury moves him regardless of where we are in the standings. If that should happen, though, who do we put in that spot? If we have a legit shot at the playoffs, I can't see Drury being okay with any of the LHD from Hartford. Maybe we would shift Schneider to the left side with Fox and bring up Mancini or Ruhwedel. Or maybe we spend a late pick on a cheap replacement.