Is Jason Bay worth $66 million?

Question

The Red Sox wanted to sign Bay but the Red Sox told Bay’s camp that their medical team had concluded that the condition of Bay’s knees and shoulders had put the deal in danger. As a result the Red Sox pulled out of the deal and offered a new 3-year deal instead.

Bay rejected it and signed with the Mets for four years and $66 million.

Boston's doctor Thomas Gill also had concerns about Pedro Martinez’s shoulder when he became a free agent after the 2004 season. Martinez wound up signing a four-year, $53 million and began experiencing major shoulder issues 1 1/2 seasons into his stint with that new team. That team was the Mets