Not a confidence inspiring expressionAccording to Sean McAdam of CSNNE.com (Comcast Sports Net New England), the Boston Red Sox are concerned with the declining defensive abilities of LF Jason Bay.   The free agent outfielder has rejected Boston's offer of a 4 year, $60 million contract, and is currently considering a reported offer from the New York Mets of 4 years, $65 million.McAdam's "baseball source" told him the Sox are more inclined to increase the average annual value of their offer rather than the number of years because "they believe Bay might have to transition to DH by the end of his next contract, citing his struggles on defense."Bay's defensive stock has fallen, can it get up?