I would imagine that either Tesselarr or Kelly could play right back.
You get plenty of right footed players who fill in at left back. It just seems more unusual to go the other way as most players are obviously right footed.
After years of folk wailing about not having a left back it now seems a bit odd having so many guys who can play left back, Tesselaar, Kelly & Plummer - but no cover for right back.
Looking at Evans' write up it says he has played right back as well and Goodwin may be able to play there and possibly Williams could start there like Naismith did before him.