Leinster will be without Robbie Henshaw for their United Rugby Championship match with the Lions this weekend.
The Ireland centre is going through the return to play protocols after being stretchered off in Leinster's win over Toulon in the Champions Cup semi-finals on Saturday.
Winger James Lowe and prop Tadhg Furlong have both trained today with the URC champions, while Jack Conan and Tommy's O'Brien's fitness will be assessed later in the week.
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Denis Buckley will leave Connacht at the end of the season.
The veteran prop is the province's second most capped player, and was part of the PRO12 winning team in 2016.
Buckley's made 275 appearances across 17 years with his home province, and he says he's exploring other opportunities for next season.
