Center Dan Koppen and defensive tackle Myron Pryor will be placed on injured reserve later today to make room for two more players, according to a league source.
The Patriots have re-signed defensive tackle Landon Cohen, and added former 49ers defensive back Phillip Adams.
UPDATE: Patriots have officially announced the moves.
The loss of Koppen could be big, but the inspired play of Dan Connolly since moving over from right guard must have given the Patriots peace of mind to make the move and not wait two more months for Koppen to return. It could have been longer. The rest and extended rehab needed for lower leg fractures can be significant.
Plus, having veteran standouts Logan Mankins and Brian Waters at both guards will definitely help Connolly play out the rest of the season.
Losing Pryor is a tough blow. After being very impressive in limited time against the Dolphins, he was primed for a bigger role rushing the passer against the Chargers before a shoulder injury forced him out.
As far as the additions, Cohen (6-3, 300 pounds) was released at the 53-man cutdown. He is a penetrating tackle who could be used in sub packages. The Patriots' other DTs: Vince Wilfork, Albert Haynesworth, and Kyle Love are big bodies who are more bull rushers. The Patriots needed someone with a little shake on the pass rush, especially with Mike Wright having another concussion. Expect Shaun Ellis to play more inside in sub packages.
Phillips (5-11, 192) brings depth in the secondary, where the Patriots have four players banged up: CB Ras-I Dowling, CB Kyle Arrington, S James Ihedigbo, and S Patrick Chung.
Phillips probably will have more of a role on special teams as the Patriots try to limit the injury exposure there of some players.