Sizemore, 29, did not play in 2012 and has played in only 210 games since 2009, while hitting just .234 with 28 home runs and 109 RBI.
He recently underwent micro-fracture surgery on his right knee and is expected to miss the first half of the 2013 season.
There is no question Sizemore is a big injury risk; and there’s no telling how he might respond from these knee surgeries over the long-term. However, prior to these injuries Sizemore was one of the best center fielders and most exciting players in the game. It will be awhile before he's ready, and so the Mets would still need to acquire more outfielders (especially right-handed outfielders) in addition to Sizemore. Last winter, Sizemore was reportedly willing to move to a corner outfield spot, and so he could be a worthy gamble to take on an incentive-based deal.