This is my guess at the final 53.
I'm sure that the coaches have much better information than I do as this is based only on what I have seen in the pre-season games. And I wasn't able to see a lot of that based on camera angles and such, so even those observations are sketchy at best.
Kenny McKinely (may be cut for the PS)
(Larson's availablility gives us 5 RBs and I think Jordan is hurt and will be IRd or put on the PUP list)
( I originally had Lichtensteiger on this list, but ... that's the way it goes sometimes.)
That's 24 on offense. Tyler Polumbus may be the last addition or I could be wrong about either Jordan or McKinley or they may go with an additional defensive player.
Jack Williams (this one is a borderline addition but he did some good things last night)
Javrivs Moss (this is the one I am on the fence about and he could just as easily be cut)
Defensive line men
Of course this could all change if someone attractive is released by another team. I see Crowder or Moss making it but not both. And the space here could be used on offense if an extra player is needed.