Johnny Sexton and Peter O'Mahony have emerged as injury concerns ahead of Leinster and Munster’s Heineken Champions Cup games next weekend.

Sexton was removed for a head injury assessment minutes after coming on as a second-half replacement in Leinster’s Guinness Pro14 final win over Munster at the RDS.

The four-time winners face Toulon at the same venue on Friday night, which means that the Ireland captain has just a six-day turnaround.

"He got a whack on the nose there," Leinster coach Leo Cullen told reporters after the game.

"He’ll go through his HIA inside. He’ll still follow the graduated return to play [protocols] so we’ll see how he comes through that." 

Sexton missed Ireland’s Six Nations match against France last month after failing to recover from a head injury suffered against Wales the week before.

Meanwhile, Munster may have to face Toulouse in Thomond Park on Saturday without captain O’Mahony after his suffered a leg injury at the start of the second half.

"He’s struggling a bit, he’s got a deep cut to his leg," said Munster head coach Johann van Graan of the back rower. 

"We will know a bit more later but it didn’t look good." 

Follow Leinster v Toulon (5.30pm, Friday) and Munster v Toulouse (3pm, Saturday) in Champions Cup action via our live blogs on RTE.ie and the RTÉ News app or listen live on RTÉ 2fm's Game On and RTÉ Radio 1's Saturday Sport.