Conor Murray and Simon Zebo return to Munster squad training this week.
Head Coach Rob Penney maintains hope that Murray will feature on Saturday, Penney said: "There is a chance [Murray will be involved v Gloucester]. Always was. Hopefully, everything being equal, and the work that's being done by the medical team behind the scene comes to fruition this week."
Murray returns ahead of schedule after just over four weeks out with medial ligament damage to his right knee, an injury he sustained against Perpignan at Thomond Park.
Zebo is back training after a 12-week absence caused by a cracked bone in his left foot - an injury picked up in the Heineken Cup opener against Edinburgh.
As expected, James Downey (irritated groin) and Keith Earls (bruised shoulder) are back training this week while Sean Dougall, who sustained a mild ankle sprain against Connacht, is expected to re-integrate into training at the end of the week.
James Cronin (lower back) and JJ Hanrahan (groin) will return to limited training early in the week and continue to be monitored as the week progresses.
Following on from the Ulster clash, the update on Donncha O'Callaghan, who was replaced after 30 minutes with a knee injury, is positive and he is expected to take part in training this week. Cathal Sheridan (knee) and Damien Varley (foot) will both undergo scans today and meet with a specialist in identifying their injury prognosis.