However, the former Atalanta captain has been warned he must meet expectations.
Lopetegui said, "We welcome him first. He is a player we like.
"But Papu is also facing the greatest challenge of his career, which is Sevilla. He comes to a team that works and comes to help us.
"Improve internal competition to improve external performance. That's what I can say about Papu as you would any other Sevilla player."