The two clubs were hardly looking to return to the Europa League for the second straight year, but that's what they had to settle for after failing to secure a spot in the Champions League following unsuccessful league campaigns.
And the 34-year-old hopes this will Arsenal's last season in Europe's second-tier competition, which they reached the semi-finals of last term.
Asked about the importance of the Europa League for Arsenal, Emery told the press: "Manchester United played in it also".
Leno has had to wait patiently for his first minutes since joining from Bayer Leverkusen in a €25 million transfer this summer, but Emery confirmed he will start in the Europa League opener against FC Vorskla at the Emirates.More news: 6 siblings of Arizona GOP congressman endorse his opponent
"When you bring players in you do that to improve the squad and to make it competitive and Bernd is here, trains every day and tries to get his spot which keeps everyone in the goalkeeping group on their toes including me, obviously".
Arsenal were the losing semi-finalists in the Europa League past year, but Vorskla Poltava manager Vasyl Sachko says his side are capable of getting a win.
While Premier League rivals Liverpool secured a last-gasp win over Paris St Germain and Tottenham lost to Inter Milan, the Gunners are preparing to open their Europa League campaign at home to little-known Ukrainian outfit Vorskla Poltava.
"One thing I learned with Juventus is to have respect for each competition", he added.More news: Who is SpaceX's first moon passenger, Yusaku Maezawa?
Lucas Torreira is set to make his full debut in midfield after impressing off the bench while Bernd Leno and Stephan Lichtsteiner are also expected to be handed their first starts since arriving in the summer. While the Italian Cup wasn't that important beforehand, we started to play for it with the best team possible.
Both have won the trophy in the past, with Sevilla holding a record five titles and Chelsea winning it in 2012 - the last time they competed in the tournament.
This season the Gunners are led by new manager Unai Emery as they look to achieve European glory for the first time and qualify for the grandest stage in European football next season- The Champions League.
"We have four competitions this season".More news: Huawei hijacked Apple store queues to hand out its own chargers