Earlier this month, it was reported that Clattenburg had turned away from immediately leaving the Premier League panel before the end of the season following a talk with David Elleray. Now, it is evident that Clattenburg's delayed retirement also has effects on his UEFA duties and appointments made by Pierluigi Collina.
Along with Jake Collin, Simon Bennett, Anthony Taylor, Andre Marriner and Harry Lennard, he is going to referee the German Europa League derby in Mönchengladbach's Borussia Park on Thursday.
All Europa League appointments:
Borussia M'gladbach - FC Schalke 04: Mark Clattenburg (ENG)
FC Krasnodar - Celta Vigo: Ruddy Buquet (FRA)
RSC Anderlecht - APOEL: Aleksei Kulbakov (BLR)
AS Roma - Olympique Lyon: Viktor Kassai (HUN)
Manchester Utd. - FC Rostov: Gediminas Mazeika (LTU)
Besiktas - Olympiacos: Michael Oliver (ENG)
KRC Genk - KAA Gent: Alberto Undiano Mallenco (ESP)
AFC Ajax - FC Kobenhavn: Ivan Kruzliak (SVK)
> full referee teams and observers