The goalkeeper has joined as a free agent from Al Raeda to June after successful trials.
Herrerin said, "The commitment from the club to me was important, as was returning to the top level in Europe. That was what I was looking for, and I couldn't let this opportunity pass me by.
"I had been talking to other clubs outside of Spain, because there was a lot of interest. However, as it turned out, when Jaume got injured -which nobody likes to see- I was told that there might be the option of joining Valencia CF. The extent of his injury wasn't known yet, but we were told that there might be the chance to come in on trial first of all, then maybe sign.
"I think that all of the coaches I've had -including Marcelino, who also coached here- have put that into my head. They've shown me how to act in the dressing room. I'm a person who puts the dressing room above the individual, always. I've never sulked because I've not played, and I've tried to help instead. When all of us goalkeepers are fit and there is a lot of competition, the team are at our best. That's what I've come here to do: Push hard, help and try to compete -which is what everybody wants to do.
"Playing in Spain, you get to know a lot of people from the dressing room and the club. They've been great to me from the start. My teammates, the physios and the coaching staff have been great. I'm really happy to have come here and found a group that is so open and supportive all the time. I'm happy. Being here is a privilege for me."