Nick Cafardo of the Boston Globe said the Red Sox have "inquired" about John Lackey.
RHP John Lackey declined the Cardinals' one-year, $15.8 million qualifying offer.
Cardinals extended a $15.8 million qualifying offer to RHP John Lackey.
John Lackey was lifted from Tuesday's loss to the Cubs after allowing four runs over three innings of work.
John Lackey will start Game 4 of the NLDS for the Cardinals against the Cubs Tuesday on short rest.
Derrick Goold of the St. Louis Post-Dispatch reports that it's possible the Cardinals will start John Lackey in Game 4 of the NLDS on short rest.
John Lackey was in complete command on Friday, limiting the Cubs to just two singles and a walk over 7 1/3 scoreless innings as the Cardinals grabbed Game 1 of the NLDS.
John Lackey will start Game 1 of the NLDS on Friday.
John Lackey allowed three runs over just four innings in Sunday's loss to the Braves.
Saturday's Cardinals/Braves game has been postponed due to rain.
John Lackey pitched well in earning a no-decision in Sunday's contest with the Brewers, yielding just one run on five hits over seven innings.
John Lackey allowed one run over seven innings, striking out seven, in the Cardinals' 3-1 win over the Reds on Tuesday.
John Lackey tossed seven scoreless innings and struck out eight Brewers in a victory Thursday.
John Lackey was handed a no-decision Friday after allowing two runs over seven innings against the Reds.