Unai Emery has warned Sevilla that there is still work to be done in order to reach the Europa League final after thumping Fiorentina 3-0 in Thursday's first-leg semi-final in Spain.

Aleix Vidal netted twice in both halves before Kevin Gameiro sealed the victory late on as Emery's side planted one foot in the showpiece in Warsaw on May 27.

However, the Spaniard has sought to reduce the risk of complacency by reminding his charges that the job is only half complete.

"It was an important step for the return leg, but Sevilla are not yet in the final," he told reporters. "Fiorentina have proven to be a great team with plenty of talent in attack.

"We've executed the first 90 minutes nicely, but now we must continue our work for the return leg in Florence.

"We need to continue to mature with our experience in Europe. This is a spiriting win, though."

The second leg takes place in Florence next Thursday.