The Patriots signed free-agent LB Niko Koutouvides and DB Sterling Moore to the 53-man roster. They take the place of S Josh Barrett, who was placed on I.R., and DT Albert Haynesworth, who was released Tuesday.
The team also shuffled its practice squad, announcing that LB Mike Rivera, S Ross Ventrone and DB Josh Victorian had been signed and DB Malcolm Williams was released.
Koutouvides spent part of training camp with the Patriots before being released in the final cut prior to the season.
Moore is in his second stint on the Patriots' active roster this season. He played in the win against the Cowboys in Week Six.