Well that's the thing. He had already signed for Villarreal, I even have a picture of him holding up a Villarreal shirt. When he signed for Villarreal he signed on a free transfer with a £4m buyout clause in it. Zaragoza then came along an offered £4m, as it met the buyout clause it had to be accepted and Ayala has obviously accepted Zaragoza's contract.
Meaning that he left Valencia on a free transfer to Villarreal, spent 13 days at Villarreal before Zaragoza met his £4m buyout clause and got him from Villarreal. Meaning he's had 3 clubs in about 2 weeks
