Earlier this morning, it was reported that David Eckstein had decided to retire, but Ken Rosenthal of FOX Sports says that's not the case (Twitter link). Rosenthal quotes Eckstein's agent, Ryan Gleichowski: "If the right opportunity arises, he will play."
Jon Heyman tweeted earlier today that Eckstein had the opportunity to play for the Mariners last season, but turned it down. The 10-year veteran has played for five teams in his career, totaling a .280/.345/.355 triple slash line.
Eckstein didn't play in the 2011 season, so it's unlikely any team would commit a Major League contract to him. Gleichowski's quote suggests that Eckstein will likely be selective, so he may prefer to sign only with a contender or to play close to his native Florida (though that's just my speculation).