Rhinos are most badly affected with 11 members of their full-time squad unavailable, but the French side have six missing and both teams have lost two men from their previous game. Here’s who is definitely ruled out of the showdown at Stade Gilbert Brutus and when they could return.
13. Paul Momirovski (Rhinos)
The centre suffered an ankle syndesmosis in Rhinos' win at Hull FC on April 28 and wil be sidelined for another four-six weeks. Coach Rohan Smith said: "He is healing really well, the physios are happy with his progress so far, but he will be in a boot for a bit longer and then we'll start the rehab process." Photo: Allan McKenzie/SWpix.com
14. Harry Newman (Rhinos)
The England centre sustained a back injury against Huddersfield Giants on April 19. He will miss a third successive game this weekend, but could be in contention for the trip to St Helens on May 24. Photo: Allan McKenzie/SWpix.com
15. Paul Seguier (Catalans)
Suffered a leg injury against Wigan Warriors last week. A return date for the prop has not been given. Photo: Alex Whitehead/SWpix.com
16. Max Simpson (Rhinos)
The teenage centre has not played since suffering an anterior cruciate ligament injury in pre-season last year. He is "training well" according to coach Rohan Smith, but there is no date for his return to match action. Photo: Allan McKenzie/SWpix.com
17. Siosiua Taukeiaho (Catalans)
The forward hasn't played this year because of a foot injury, but was initially given a return date of late-May or June. Photo: Allan McKenzie/SWpix.com
18. Tanguy Zenon (Catalans)
The full-back is another player who has yet to feature for Catalans this season. His return date has not been confirmed. Photo: Rémi Vignaud/Catalans Dragons/SWpix.com