West Ham United have no fresh injury concerns ahead of Thursday’s tie, but will be without Gianluca Scamacca (knee) while Vladimír Coufal (hamstring) is also set to miss the game.
Kurt Zouma (ankle) is reported to be back i training after missing Sunday’s Premier League victory over Manchester United but could return for the natch at Brentford and almist certainly for the second leg of the semi final
AZ Alkmaar will be without Hungarian left-back Milos Kerkez through suspension. Captain and former Stoke City centre-back Bruno Martins Indi (thigh), goalkeeper Sem Westerveld (knee), Sweden forward Jesper Karlsson (leg) and attacking midfielder Dani de Wit (foot) have also not travelled.
Thursday’s tie will be broadcast live in the UK by BT Sport 1 and BT Sport Ultimate, with kick-off at 8pm GMT
Goal Line Technology will be in operation for this fixture.
VAR is now operational in the UEFA Europa Conference League knockout rounds.
Up to 12 substitutes can be named by each manager. Five substitutes are permitted to be used on three occasions, plus half-time. There are no additional ‘concussion substitutes’ available in UEFA Club Competition.
In the event that the tie goes to extra-time then a sixth substitute and an additional substitution opportunity is available.
Disciplinary-wise, all accumulated yellow cards expired upon completion of the quarter-finals.