Unai Emery won three back-to-back Europa League with Sevilla between 2014 and 2016.
The former Paris Saint-Germain boss defeated Valencia in the last four of the 2013/14 season to win the first European silverware of his managerial career.
Arsenal will be hoping their manager can help them win the competition this season, but to do that they first need to overcome Los Ches in the semi-final.
AS have predicted the La Liga outfit’s starting XI to face the Gunners in the first leg of the tie.
According to the Spanish newspaper, Marcelino is expected to use a 4-4-2 formation with Brazilian Neto in the goalkeeping position.
Cristiano Piccini, who has made the trip to London after recovering from injury, is predicted to start in the right-back position. Former Arsenal man Gabriel Paulista is likely to partner Argentine Ezequiel Garay in the heart of the back four with Jose Gaya in the left-back position.
The visitors will be without the services of Francis Coquelin and injured Geoffrey Kondogbia, meaning Marcelino will have to use Daniel Parejo and Daniel Wass in the central midfield positions.
Carlos Soler and Gonçalo Guedes will be in the wide positions, whilst Rodrigo and Kevin Gameiro are predicted to lead their side’s attack.
Valencia have already made it to the Copa del Rey final where they will face Barcelona later this month. 
The Europa League final is also scheduled this month and never in their history they have made it to two finals in the same month.
Marcelino’s side have an opportunity to do so… but first there’s Arsenal.
