Monchi is delighted to be taking the Roma sporting director's job.
He will leave Sevilla at the end of the season.
“I believe Roma have already built a lot. All we have to do is add to that and I really believe that with good planning, the right personnel and infrastructure we can achieve great things," he told Roma TV.
“I really want to repay the warm welcome I've received from the President, club and management. I'm very keen to get started and put together the best possible Roma side.
“It was the club's interest in me and the determination they showed in wanting to bring me here (that made me choose Roma). Plus the lure of the club itself.
“I believe this club is perfectly suited to the way I work. It's an ambitious club that wants to grow and compete for major honours. This is a wonderful city and the club have a huge fanbase. I believe we have everything we need to do a good job."