Unai Emery may have already won three Europa League titles with Sevilla, but David Seaman insists it would be a "phenomenal achievement" if the Spaniard were to lead Arsenal to success in this year's tournament.
The Gunners host Napoli on Thursday in the first leg of their quarter-final tie, the winner advancing to a last-four clash against either Villarreal or Valencia.
Emery knows those two Spanish clubs well from his time in charge of Sevilla, with whom he won the Europa League in 2014, 2015 and 2016.