I like Jones a lot, one of the best defenders for his age i have seen in a long while. I'm presuming Squillaci would be the one to make way, and we would end up with a very young quartet in a place you usually should have a good degree of experience. Wouldn't be ideal in that regard.
He looks very much like a natural CB rather than a midfielder but maybe he could be a good Song deputy for a couple of years before switching to defence permanently? Obviously he could be play CB when possible in the meantime too.
As for Podolski, i'm not so sure. He really failed at Munich and then he took an easy return back to Koln, which doesn't say a lot. That said if we got him i wouldn't complain.