It would be a nice pickup not only for pitching but for another very good vetern to help with Chapman's development

Unfortunately, I don't believe Aroldis Chapman wil have a chance to start with the Reds. If Dusty has anything to say about it (he will) I say he starts in Louisville.
I think the Reds have to give Bailey a shot, because he's been out of options for 2 years, and can't hide on the DL forever. I think if Leake and Arroyo occupy the same rotation, they better have a lefty or a power pitcher separateing them, or the oppositions timing at the plate wil look like batting practice. So, I'm not a fan of pitching Cueto and Latos at the #1-#2 spots...I think the Reds better get a softabller like Leake or Arroyo in between them.
So, Roy Oswalt would be a better 3rd or 4th option than available Reds, IMO....but isn't worth more than $5-6 million, IMO. For a third of that, I'd give a job to Bailey. Cueto, Latos, Arroyo, Oswalt, Leake and Bailey is one too manyeven without Chapman, and although I think Bailey's got a better chance throwing 135 innings a year as a long man than 200 as a starter, I don't believe the powers that be in Cincinnati agree with me, and Leake would probably be the odd man out of the rotation if Oswalt is signed, or on the long shot Chapman makes the rotation...I'm not a huge Leake fan, but you can't argue with success, and his 2011 performance deserves another shot in 2012.
I HOPE Oswalt dislikes the Cardinals, but I can't see why the Braves or Rangers don't make sense.
I don't know about Arroyo. He did start out the year with mono, and that can have long term effects. I hope he comes back and has a good year. I guess we will find out early in the season or spring training
How many "known" factors are there in MLB ? None, I'd say.