Greg Colbrunn has expressed uncertainty as to whether he'll return to the Boston Red Sox next season.

The hitting coach had a serious health scare earlier this season.

Colbrunn cited a desire to spend more time with his family as a reason he might elect not to return next season.

Boston went from having baseball's most prolific offense in 2013 -- Colbrunn's first season as a big league hitting coach -- to having one of the worst in 2014.