The St. Louis Rams used two mid-round draft choices for wide receivers in 2011.
They also acquired veteran Brandon Lloyd during a trade.
Those moves fit the Rams' plans at the time, but times have changed.
The Rams have a new general manager and new coaching staff. Some of the players they targeted for 2011 offensive coordinator Josh McDaniels don't fit as well under new coordinator Brian Schottenheimer.
Austin Pettis, the receiver St. Louis took in the third-round a year ago, remains on the roster, albeit on the reserve/suspended list through Week 2.
The Rams used 2012 second- and fourth-round choices for wide receivers. They also signed veteran Steve Smith.
Salas lined up primarily in the slot last season. Danny Amendola is expected to play there extensively now that he has recovered from the arm injury that ended his 2011 season after one game. Smith also has slot experience.
Salas joins Lloyd with the Patriots. New England signed Lloyd in free agency.