|Venue: Franklin’s Gardens Date: Saturday, 10 April Kick-off: 20:00 BST
|Protection: Reside rating updates on BBC native radio and on the BBC Sport web site
Northampton make 9 modifications as they bid to make a primary European semi-final since their 2014 Problem Cup triumph.
Fly-half Dan Biggar returns from an belly harm whereas co-captain Lewis Ludlam is recalled at flanker.
Ulster boss Dan McFarland has picked the identical XV that eased to victory over a second-string Harlequins final week.
There’s nonetheless no return for Iain Henderson, so Alan O’Connor and Kieran Treadwell proceed their partnership within the second row.
In Henderson’s absence, Jordi Murphy will once more captain the aspect from the again row.
Michael Lowry, Robert Baloucoune and Jacob Stockdale type an thrilling again three, with Billy Burns and John Cooney once more forming the half-back partnership.
The Problem Cup semi-final draw might be held on Sunday.
Northampton: Freeman; Sleightholme, Hutchinson, Francis, Naiyaravoro; Biggar, Mitchell; Waller (co-capt), S Matavesi, Hill, Ribbans, Coles, Isiekwe, Ludlam (co-capt), Harrison
Replacements: Haywood, Auterac, Painter, Moon, Wooden, James, Tuala, Dingwall
Ulster: Lowry; Baloucoune, Hume, McCloskey, Stockdale; Burns, Cooney; O’Sullivan, Herring, Moore, O’Connor, Treadwell; Reidy, Murphy (capt), Timoney
Replacements: Andrew, Warwick, O’Toole, M Rea, Jones, Mathewson, Madigan, McIlroy
Referee: Alexandre Ruiz (Fra)