Shane Jennings, Dan Leavy, Dave Kearney and Jordi Murphy all returned to training with Leinster today as they stepped up their recovery from injury.
Jennings, Leavy and Kearney could even come into contention for selection as early as next week if they suffer no adverse reaction.
Meanwhile, Mike Ross and Rob Kearney are also back in training but a decision their availability for this weekend's Champions Cup clash against Castres will not be made until later in the week.
Luke Fitzgerald has taken a full part in training this week and is available once again, while new signing Ben Te'o is likely to be involved with either the senior squad or the Leinster 'A' team this weekend.