[Caged Great]

Here's a quick look at all the UFAs to be on the blue line that are at all relevant.

Markov
Girardi
Wideman
Streit
Beauchemin
Kulikov
Shattenkirk
Stone
Oduya
Del Zotto
Franson
Daley
Russell
Hainsey
Alzner
Polak
Tyutin
Campbell

The bold ones are the ones that are most likely as #4/5 guys.

Stone tops my list for UFA #1.

As for the #5 spot, I'd be perfectly fine with any of Daley, Campbell, Polak, Russell, Franson, or Girardi depending on cost to sign.