The referees have been assigned for Thursday’s Europa League and Conference League fixtures, including Michael Oliver for Atalanta-Sporting CP and Daniel Stefanski for Servette-Roma.
UEFA have appointed English official Oliver to the showdown with Sporting CP in Bergamo.
He will be assisted by Stuart Burt, Daniel Cook, fourth official Andrew Madley and the VAR Stuart Attwell, supported by Carlos del Cerro Grande.
Atalanta have already qualified for the next round, but this will decide who finishes top of the group and avoids the play-offs.
Roma visit Swiss side Servette and the referee is Daniel Stefanski of Poland, with his fellow countrymen Piotr Lasyk and Pawel Pskit in the VAR booth.
In the Conference League, Fiorentina have a very tight group and welcome Belgians KRC Genk to the Stadio Franchi.
Joey Kooij of the Netherlands has been assigned to officiate this match, with Jeroen Manschot and Erwin Blank as the VAR and assistant.