Munster will be hoping they can overcome a narrow deficit and secure their place in the last eight this weekend.
They fell to a 13-8 defeat in the first leg so it's all still very much to play for at Thomond Park.
Here's everything you need to know about the match:
When is it on and what time is kick-off?
It'll be played on Saturday April 16th with kick-off set for 3 pm.
What TV channel is it on and can I stream it?
It'll be shown on BT Sport 2 so only subscribers can stream it via the BT Sport app.
What's been said in the build-up?
The talk around Munster this week has been dominated by the confirmation that it will be Graham Rowntree who succeeds Johann Van Graan for the top job from July 1st.
Speaking for the first time since the province announced that their forwards coach would be taking over in the hot seat, Rowntree said: "It's excellent, it was a thorough process.
"It's all done now, we can crack on, not that I was distracted by any means but we can crack on - and crack on with Saturday's game in particular.
"As I've said before, it's very much like the environment I grew up in at Leicester - very down to earth, humble group of people.
"Very passionate, a big supporter base who are mad about their rugby, enjoy the craic, say no more!
"I'm ready. I just feel I'm ready, and I know the club feels it's the right time.
"I learned a lot, you get to a point in your career where you're comfortable about making the step up with the experiences you've been through.
"That's why I threw my heat in the ring, and luckily I got it."
Get the latest sports headlines straight to your inbox by signing up for free email alerts
