Kenley Jansen/Chris Martin
Both of these late-inning arms had great seasons for the Red Sox in 2023, and Chris Martin flew under the radar as one of the most underrated relievers in the league. Martin logged a 1.05 ERA last season, a career-low for the 37-year-old, and 46 strikeouts in 51.1 innings.
Kenley Jansen is coming off an All-Star season for the Sox and he's been on the trade block for a few weeks leading up to spring training. Jansen is battling lat soreness as training gets underway, which interested teams may use as a negotiating chip in any trade discussions before the season. Jansen's 3.63 ERA wasn't his best, but he still fanned 52 batters in 44.2 innings of work.
Martin and Jansen are both approaching the end of their contracts with the Red Sox. Unless Boston is a playoff contender at the trade deadline, either one of the two pitchers will likely be traded to get something for them in return as their contracts expire — it's unlikely the two aging hurlers would want to play another season in Boston where they probably won't contend for a championship.