The physios at England and Newcastle are as happy as they could possibly be at this point of the recovery.
As for a potential return date, he added: "Overall, it is massively positive, considering the circumstances, and all I can do is try to get back. It happened two and a half weeks ago and the limit was then set of six to eight weeks, which is the second half of the Six Nations.
All I can do is free myself up for selection and then see what people want to do with me, whether they want to play me or leave it. I am just concentrating on doing my bit, which is the rehab.