He is battling against a groin injury and keeps taking painkilling injections to get him through it.
He will require an operation at some point but Blackwell said in the Sunday Mirror: " It's a delicate situation with Rob and he's battling on. It's a case of looking after him as best we can. He's doing OK and the medical staff have become like a second family to him. We'll just have to see how he gets on."