Klaassen isn't concerned with getting on the ball. His game is all about off-the-ball movement and creating space, either for himself or for his teammates (see Rooney's goal against Stoke for a prime example). There's a time and place for that but unfortunately, it's not tonight.
Missed opportunity not starting Sigurdsson, especially since his best performance for us came in the second half against Limassol where he played more of a central box-to-box role. Tough choice between Rooney/Sigurdsson to replace Klaassen in the second half.
Rooney isn't in the squad