Wells, 35, became expendable after the Yankees signed free-agent outfielders Carlos Beltran and Jacoby Ellsbury. In his only season with the Yankees, Wells batted .233 with 50 runs batted in. He hit one of his 11 home runs after May 15.
A 15-year Major League Baseball veteran and three-time All-Star, Wells has a .270 career batting average with 270 home runs and 958 RBIs.
“Thank you Yankees for the opportunity to be a part of such a storied franchise,” Well said via Twitter.
Thornton, 37, went 0-4 with a 3.74 earned run average in 60 appearances last season with the Chicago White Sox and Boston Red Sox. He is the only major league pitcher to make at least 55 appearances in each of the last nine seasons.
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