The deal with Mo has been finalized. From the official site:

Rivera and the Yankees formally finalized a three-year agreement worth a reported $45 million on Monday. The pact will keep Rivera, a Yankee since 1995 and the most dominant postseason closer of all-time, in New York.

"It's great," Rivera said. "That's what I wanted. To me, it was important to finish with the Yankees, because that's the only team that I have played with. I wanted to wrap it up with the Yankees, and we were able to do it. The Yankees and I got to the agreement, and thank God it's done."

Glad it's finally done with. Welcome back, Mo.