There are a few different ways that the Boston Red Sox could look at this. The 33-year-old has been one of the best pitchers in Major League Baseball for a long time and even had a great season a year ago despite being injured then as well.
In the 2021 season, he started nine games and had a 5-1 record with a 1.34 WHIP and a 3.16 ERA.
His career numbers are almost video game-like as he has a 1.04 WHIP and a 3.03 ERA in 321 games pitched. For a Boston rotation that could use some help, Sale would be a major addition.
However, if he can work out of the bullpen, but can't be a starting pitcher, then there must be some worries that his injury isn't fully recovered. At the end of the day, he still has a few years left in his career and it would be a bad decision from Boston's standpoint to put him back out there if he's not fully healthy.