Ryan Baird and Rónan Kelleher are back in full training ahead of Saturday’s Champions Cup quarter-final against Leicester Tigers at Mattioli Woods Welford Road.
Baird has recovered from a back injury picked up on international duty while Kelleher was a late withdrawal from the squad against Cell C Sharks with a shoulder knock.
Max Deegan (shoulder) will be further assessed this week before a final decision is made on his availability to face Leicester.
Cullen will be without hooker James Tracy who is ruled out with a neck injury. There are no further updates on Dave Kearney (hamstring) and Will Connors (knee).
The full squad have now returned from South Africa and will begin their preparation for Saturday at the province’s base in UCD.