ESPN.com's Buster Olney reports that, according to sources, the Yankees placed a waiver claim on Chris Carter of the Boston Red Sox. The Sox had put Carter on waivers to clear the way for him to be traded to the Mets in the acquisition of Billy Wagner. But, now they have pulled him back from waivers and he'll need to occupy a 40 man roster spot for the rest of the 2009 season.This serves to limit, however minimally, the Red Sox roster flexibility.

The Wagner deal is officially two players to be named later, so the Mets will have to wait until after the season if they want Carter.

Via Howard Megdal.