I agree with you on Carroll, I just don't see BR and AC being on the same page. Although got to give the lad credit for an excellent goal this past weekend.
On Sow I'm not sure, and will have to ask my Turkish friends what they make of him as I don’t know much about the lad. But, on first look I'm not sure. While Fennerbache is a club who can compete with many top clubs in Europe, the Turkish league as a whole is very week, so I'd take any stats he's built up in domestic play with a pinch of salt.
I also question players who do go to Turkey to play, especially while still in their prime. The elite Turkish clubs can offer European football, and top salaries, but it’s usually where players end up for their last big contract, rather than when they are in their prime.