James Harrison

The 39-year-old Harrison was released by the Steelers three days earlier after seeing limited use most of the season behind first-round pick T.J. Watt, who claimed a starting role at outside linebacker out of training camp. The owner of 82.5 career sacks, Harrison seems unlikely to be used as anything more than a situational pass rusher in New England, but his addition at least gives the Patriots some extra coverage on the edge with Kyle Van Noy (calf) having missed the team's last three games.

Harrison, the Steelers' all-time sack leader, has been with the team since they signed him as an undrafted rookie free agent in 2002. Despite being on the active roster, the 39-year-old has only suited up for six of the team's previous seven games. If this is the end of the road for the veteran linebacker, he will finish his career with 788 tackles (570 solo) and 82.5 sacks,.

Even at age 38, Harrison showed that he can still make an impact on an NFL field. The 14-year veteran played in 15 regular season games for the Steelers in 2016, recording 53 total tackles, 5.0 sacks, two forced fumbles and one interception. Harrison also got it done in the playoffs, racking up 20 tackles, 2.5 sacks and a forced fumble over three games.

This is definitely a positive development for the Steelers, as Harrison has made a major impact over the first two rounds of the playoffs. In wins versus the Dolphins and Chiefs the past two weekends, the 38-year-old linebacker has combined for 16 total tackles and 2.5 sacks.