Owen Coyle is not going to risk rushing players back from injury in his bid to help Bolton away from trouble at the bottom of the Premier League.
The Reebok Stadium boss has been without the likes of Stuart Holden, Chung-Yong Lee, Sam Ricketts and Marcos Alonso due to long-term problems.
Jussi Jaaskelainen also missed the 5-1 defeat to Chelsea prior to the international break, although the goalkeeper is expected to return to the first XI for Saturday's trip to Wigan.
During their battle with a lengthy injury list, Bolton have taken just three points from seven matches to slump to the foot of the table, following six successive defeats.
But Coyle is not going to push people back to fitness, as he told a press conference broadcast on Sky Sports News: "They are certainly improving.
"That augers well. But we can't be rushing anybody back.
"We have to make sure first and foremost that when they come back it is the right time for them to continue their careers, as much as we would love them fit and available now."
Jaaskelainen returned to training on Tuesday and Coyle is hopeful the experienced shot-stopper will not suffer any adverse reaction following his thigh problem.
Twenty-four-year-old Adam Bogdan played against Chelsea instead of the Finn and produced two glaring errors in the heavy loss.
But Coyle has high hopes for the Hungary international and thinks Jaaskelainen will help in his development.
"Young Adam, as we know, made a couple of mistakes in the Chelsea game," said the Bolton manager.
"But he'll be a top goalkeeper in time. That is the thing about a goalkeeper. You make a mistake and invariably it's a goal and you have to through that, so you have to show mental strength. Jussi will help Adam with that as well."