While I consider the Jon Niese trade to be a separate deal on it's own, and one that I thought was good, I don't consider the other two deals made on Monday to be separate. Neal Huntington even said afterwards that they brought in Nova to be a veteran in the rotation with Liriano leaving. I assumed as much once the Liriano deal was announced, so it's hard for me to look at them as two different deals. One was made due to the other one leaving a hole. You can read much more, including quotes on the Liriano deal, in the First Pitch article from late last night.
Morning Report: Thoughts on the Liriano/Nova Deals
