We have CB covered. Connolly is our backup there and is more than capable (we used him as a right back in the premier league last time and he has made it clear on many occasions he doesn't like playing there) and has just signed a new deal.
Cunningham is also able to play CB.
Midfielder and striker is what's being sorted currently. I'd say the problem area is right full back personally, however Paterson and Manga are able to play there, even if it's not their best or preferred position.