Johnson I could see, as he is essentially major league ready, or close enough to it that you can mix and match with him to get through a season. Sheets? Again, I just don't see it. If he played a premium defensive position, I could even see it, but even if you get their bat going, you are taking a DH/1B type, which aren't that hard to find. I can't see teams wanting a dead roster spot to get a guy like that through a whole season.