Jimmy O'Brien, Robbie Henshaw, Tommy O'Brien and Tadhg Furlong will be assessed later in the week.
Ciaran Frawley and Jack Conan will be available for Leinster to play Connacht in the URC this week after the pair both made a return to training.
The province say Jimmy O'Brien, Robbie Henshaw, Tommy O'Brien and Tadhg Furlong will be assessed later in the week.
Hugo Keenan won't see action in Galway but the news is positive for the Ireland international, who is returning from hip surgery.
The full-back has yet to feature for club or country since returning from the Lions tour but has stepped up his on-field training alongside Naas's Jamie Osbourne, who has been out with a shoulder injury since November.
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