It seems almost certain the Pats will add WR and OT depth after Izzo goes to IR/Eligible. However, those acquisitions would bring the roster up to 53, so I don't know where that leaves Bolden - unless the Pats are trading away someone.
It seems more likely to me that the Pats would add a depth WR from the pool of newly-minted FAs than to trade for one. Possibly the same with OT.
Pats cuts who seem likely to me to get claimed include:
Webb
Lewis
Valentine
C.Jones
Gillislee
McCarron
Possibly also:
Lucien
M.Flowers
Harris
For the Pats PSquad ...
The Pats typically keep a total of 10 OL between the active roster and the PSquad, probably so that they can field a full 5-man scout-team OL. If the Pats are going with 8 OL on the active roster, I'd expect two on the Psquad, one of whom might be Croston.
Etling might be signed to the PSquad, but possibly Rudock instead (if he isn't claimed elsewhere).
Beyond that, I'd guess that the composition of the PSquad/scout-team includes:
1 LB
2 WR ... probably /PR, possibly Lucien, Maye or Reedy (again)
1 DT ... possibly Herron or Atkins
possibly Muhammad or Farrow (RBs)
possibly Wiltz and/or Travis
possibly Poggi