Craig Kimbrel on Monday officially declined a one-year, $17.9 million qualifying offer from the Red Sox.
The closer remains eligible to return to the Sox. But if he does not, the team would receive a compensatory pick after the fourth round of the amateur draft in June.
Lefthander Patrick Corbin (Diamondbacks), catcher Yasmani Grandal (Dodgers), outfielder Bryce Harper (Nationals), lefthander Dallas Keuchel (Astros), and outfielder A.J. Pollock (Diamondbacks) also rejected their offers.