I'm betting it will be one of these three people, in order:
1. Todd Hollandsworth (IMO, he does great pre and post-game work on CSN and he is honest)
2. Kerry Wood. 2 years ago when he came back for cheap, he said that he worked out a deal with Hendry that he would get a job with the Cubs organization when he retired. Sure, Hendry isn't back, but you know he will work for the Cubs in some way next year.
3. Keith Moreland. Not a big name for those who don't pay attention. A few years ago, he would replace Bob Brenly during his vacation days. Now, he has replaced Ron Santo as the color analyst in the radio booth. He is great for the radio, so I'm not sure if they will take him out.