Mikel Arteta labelled his youngsters a “joy to watch” as Arsenal put Slavia Prague to the sword to reach the Europa League semi-finals for the third time in four years. Academy graduates Emile Smith Rowe and Bukayo Saka both starred for the Gunners as they shocked the hosts with a fine first-half display, hitting three goals in six minutes en route to a 4-0 win on the night. Smith Rowe had a goal ruled out by VAR for offside before Nicolas Pepe opened the scoring, Alexandre Lacazette then converting a penalty after Saka was fouled before the England international added the third himself.