Arsenal fullback Hector Bellerin admits he keeps in touch with Cagliari coach Gianfranco Zola.
Zola worked with Bellerin when in charge of Watford.
Bellerin told arsenal.com: "Watford was a really good experience, especially with Gianfranco Zola as a coach - I learned a lot from him. It was just about getting involved in professional football for the first time, getting experience in the Championship and he played me since the first day.
"I'm really grateful and I call him sometimes to thank him because he was the one that gave me the chance and trusted me. I had a really good time over there and lots of people think that I had to come back because I wasn't playing, but it was a really positive experience for me."
