"It's good news with Rio. It is not a cracked bone, he had a bit of bruising on the lung which was why he was coughing up blood but there has been nothing since then," Ferguson said.
"Hopefully we can get him ready for Tuesday, he seems almost back to normal. But he won't play tomorrow.
"Of course when you see it at the time you fear the worst but now it is just a case of getting him back training, hopefully on Sunday, and getting him ready for Tuesday."