Leinster will start tomorrow's Heineken Champions Cup opener against Montpellier without Johnny Sexton and James Ryan, with the Ireland duo named on the replacements bench. 

The pair were injured on Ireland duty, out-half Sexton suffering a dead leg and lock Ryan was removed for a head injury assessment in last weekend's Autumn Nations Cup win over Scotland, and both have been deemed fit to play their part in France.

Ross Byrne starts at 10, while Scott Fardy and Devin Toner make up the second row.

There is a European debut for full-back Jimmy O'Brien, who has recovered from a back injury, while centre Ciarán Frawley earns his first Champions Cup start, alongside Ireland international Robbie Henshaw. 

Champions Cup: Provinces start European action

Hugo Keenan and Dave Kearney are on the wings, with Luke McGrath starting at scrum-half. 

Peter Dooley, James Tracy and Michael Bent make up the front row, while Rhys Ruddock captains the side from blindside wing forward.

Josh van der Flier starts at 7 with Caelan Doris, man of the match for Ireland last weekend, at number 8. 

Leinster: Jimmy O'Brien, Hugo Keenan, Robbie Henshaw, Ciarán Frawley, Dave Kearney, Ross Byrne, Luke McGrath; Peter Dooley, James Tracy, Michael Bent, Devin Toner, Scott Fardy, Rhys Ruddock (capt), Josh van der Flier, Caelan Doris. 

Replacements: Rónan Kelleher, Cian Healy, Andrew Porter, James Ryan, Ryan Baird, Jamison Gibson-Park, Johnny Sexton, Dan Leavy. 

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Follow Ulster v Toulouse (kick-off 8pm) with our live blog on rte.ie/sport or listen to live commentary on RTÉ Radio 1 Extra; follow Montpellier v Leinster (kick-off 5.30pm, Saturday) with our live blog or listen on Saturday Sport on RTÉ Radio 1.