According to Jayson Stark at ESPN, the Mets have placed former closer Billy Wagner on waivers with the hopes that they can unload him to another team. Stark says Wagner's imminent return could be considered a "glorified audition."
If Wagner were to be claimed, that team would be on the hook for the roughly $2.7MM remaining on his contract this year as well as the $1MM buyout on his option for next year. So if Wagner clears, which he most likely will, it looks like the Mets will be forced to pay a good chunk of the money he's due if they're going to move him.
It'll be interesting to see how Wagner performs upon his return. Should he rebound, who does he make the most sense for?