Millwall physio Bobby Bacic expects Shane Lowry and James Henry to be fit for the start of the Championship season.
Both players sustained injuries during the Lions' pre-season tour of Ireland.
"Shane (groin) and James (knee) both have short-term injuries, but should be ready for the opening day of the season, while Shaun Batt and Josh Wright will both train this week," Bacic told the club's official website.
"The injured players who did not travel to Ireland are looking to resume training soon. Darius Henderson and Liam Trotter will join the main group on Tuesday, as will Tam Mkwandawire.
"However, Tam is going to begin by gently introducing himself back and building up his exposure over the next two weeks.
"Paul Robinson has had a minor blip in his rehab, with a small infection, but we hope to have him running at full speed again later this week, once the infection settles totally."
