10:41pm: Pena has been told that the Cubs will pull him back off of waivers, according to Muskat (on Twitter).
5:59pm: The Cubs and Yankees haven't had contact about Pena as of this evening, according to Olney (on Twitter).
5:06pm: GM Brian Cashman told MLB.com's Bryan Hoch that a trade is "very unlikely" for the Yankees and that he's "not optimistic" about making a deal. MLB.com's Carrie Muskat reports (on Twitter) that Pena isn't going anywhere.
4:16pm: The Yankees claimed Pena, according to Jon Heyman of SI.com (on Twitter). That means every team in baseball other than New York and possibly Boston passed on Pena. It's clear that the Yankees want Pena, according to ESPN.com's Buster Olney, but Ken Rosenthal of FOX Sports says the Cubs remain reluctant to make a deal (Twitter links).
1:09pm: Cubs slugger Carlos Pena was claimed on waivers by an unknown team, according to Buster Olney of ESPN.com (via Twitter). The Cubs made the decision to place Pena on trade waivers on Monday, triggering a 48 hour window in which teams could put in claims.
In 480 plate appearances this year for the Cubs, the 33-year-old is hitting .222/.342/.455 with 23 homers. Pena is owed about $1MM for the rest of the year and projects as a Type B free agent this winter. The Cubs will be on the hook for a deferred $5MM in January even if they deal him.