The Andalusian outfit have been drawn against alongside Freiburg, Estoril and Slovan Liberec after being allowed into the competition, due Rayo Vallecano, who originally qualified, being denied a Uefa licence.
However, Del Nido is certain that his side will be able to make it out of the group stage and into the knockout phase of the competition.
I have zero concerns about qualification, the 56-year-old told reporters.
We have 14 new players, and it will take time for them all to learn the tactical and technical elements of coach Unai Emery's system. In a couple months we will be much better and will be losing less games.
Sevilla lost 3-2 to Barcelona last Saturday thanks to a last-second Alexis Sanchez winner and Del Nido is angry at the manner with which his team surrendered a point.
After scoring in the 92nd minute we should've seen the game out and got a point, he continued.
