Quique Setien said he was surprised by Barcelona's interest considering he doesn't have the resume of past managers.
"Honestly, I just could not imagine them going for me. I don't have an extensive CV, I've not won any trophies. The only thing I have, which I have demonstrated for many years, is this philosophy of football which I love," said Setien.
Setien added that he couldn't guarantee results, only that they would play entertaining football.
"I have used that same philosophy wherever I have been, Look at my sides at Las Palmas and Betis, they played good football. Whenever I go to a new club, I only guarantee one thing: that they will play good football. I didn't know if that would be sufficient to convince such a big club to give me an opportunity, but I am extremely grateful."