Arsenal 3-1 Valencia: 5 talking points as Gunners strike late in semi-final

Alexandre Lacazette was the hero for Arsenal as his first-half brace secured a comeback victory over Valencia [Courtesy]

Alexandre Lacazette's first-half double and Pierre-Emerick Aubameyang's late third gave Arsenal the advantage in their Europa League semi-final with Valencia.

But there is still plenty of work to be done in the Mestalla next Thursday after the Spanish side bagged themselves an early away goal.