Owen Coyle says he will not rush Stuart Holden and Chung-Yong Lee back into action as the pair recover from long-term injuries.
Holden has been limited to just one appearance this season in the Carling Cup with a knee injury, whilst Lee is yet to feature for Bolton this term.
Midfielder Holden is currently in the United States continuing his rehabilitation whilst winger Lee has started some light training at the team's Euxton base.
On a more positive note Marcos Alonso has stepped up his recovery work and could be fit enough to train with the rest of the squad next week.
Coyle said: "Marcos Alonso is back training on the grass and he will hopefully join in with the group on Monday. He might need a reserve game or two under his belt, but it's great to have him back.
"Stuart Holden's the one who will be out the longest of them all, but Chung-Yong Lee has done some light training on the grass.
"With the nature of Chung-Yong's injury, he just has to build up his confidence and when he does that, which might take a couple of weeks, he will then get involved with the group.
"We wish we had him and Stuart both back because they are top players, but it's important that we bring them back at the right time and that's what we will do."