UEFA have confirmed the designation of the referees to take charge of Europa League Last 32 second legs on Thursday.
Lazio play Bulgarian side Ludogrets looking to overturn a 1-0 first leg defeat, and they will do so with Portuguese official Olegario Manuel Bartolo Faustino Benquerenca in charge.
Napoli meanwhile, host Swansea having drawn 0-0 in Wales – Romanian Ovidiu Alin Hategan is the man in black.
Croatian Marijo Strahonja will be the referee as Fiorentina host Esbjerg having won 3-1 in Denmark.
There is no news however, on who will be in charge for Juventus against Trabzonspor.