Miguel Angel Morenatti/Associated Press
Kevin Gameiro is trying to beat an injury.
If Kevin Gameiro is fit then Unai Emery is likely to ask him to lead the line for Sevilla.
He is up against a strong centre-back partnership in Luisao and Ezequiel Garay.
Gameiro is in good form, with seven goals in his last eight games.
But Benfica's defence has been sturdy, too.
In the last 11 games in the Liga and also in the Europa League, they have only shipped four goals.
Two of them came away against rivals Porto at the weekend, when they played a weakened team as they have already won the title.
Gameiro told UEFA.com:
It's a one-off game and anything is possible. The most important thing is to give everything and not regret anything at the end – to give everything, to be 100% fit and then see what happens.
If he works hard up front then he may earn a couple of chances against the rugged defenders.
Then Gameiro must be clinical.
However, if he misses out on the game because of a problem with his right knee, then Carlos Bacca will be the man for the job.
The Colombian has also had a good season but is in less impressive form lately, only notching twice in his past 10 games.
A boost for Sevilla is that Garay has missed a couple of games because of an injury sustained in the semi-final.
It is unknown whether he will return in time to face the Spanish side or not.