But Black has warned fans against expecting the £3 million summer signing to be back before the new year. Republic of Ireland international striker Best is yet to make his competitive debut for Rovers having suffered the injury less than a month after joining from Newcastle during July's friendly win over AEK Athens.
"It's going according to plan and that's credit to him because he's worked exceptionally hard," said Black.
"When it's a long-term injury like that it's very difficult to be focused every day but, certainly from what I've seen, he deserves a lot of credit.
"He's a tough boy who wants to do the work properly and he'll reap the benefits of that hopefully nearer the end of the injury term.
"I think we can dismiss him for the time being and look to the new year. I've been involved with three or four players who've had cruciate ligaments (injuries). It takes time and even though the whole medical process is finished, it still takes a little bit of time to come back in. The sooner we get him back the better, but we won't be rushing him just for the sake of getting him back."