England are yet to set a date for Dylan Hartley's return from his knee injury despite the Northampton hooker reporting to the squad's Surrey base to continue his rehabilitation.
Hartley has not played since December 21 because of the issue and the co-captain had been pencilled in for a return in the Six Nations round-three match against Wales at the earliest.
Eddie Jones suggested he might need an operation to repair what Northampton boss Chris Boyd described as a "grumbly" knee and, while surgery has so far been avoided, assistant coach John Mitchell declined to provide a schedule for his comeback.
"Dylan's been in for two days of rehab. It's good to see him. He's in a good place to return at some point, although we're unsure when that point will be," Mitchell said.
"He looks in really good shape and that reflects well on this environment and is a good advert for him as a leader - showing that when you're out you can still look after yourself and present yourself in good shape."
Hartley missed the standout performance and result of the Jones era after Ireland were dismantled 32-20 to launch England's Six Nations title quest in stunning fashion on Saturday.
