Burchnall said "Some will be out for longer, some have been back training this week, so we are getting there.
"We had three central defenders in (on Wednesday), I'm not sure they will all be available for the weekend.
“I'm hoping at least one returns, possibly two for Saturday's game, but it's eased a little bit, but we are still a way to go.
"Lacey has trained fully all week, Connell (Rawlinson) was pitch based today and Kyle Cameron was out on the pitch but still with the physios today.
"Connell and Lacey have taken some steps and Kyle Cameron is not far from them as well so we'll see how that settles down on Friday and perhaps one of those three will be available for the weekend."