Italian international Diego Fabbrini is one of six Udinese players who have been sold to sister club Watford.
The 22-year-old, who spent half of last season on loan at Palermo, has put pen to paper on a deal until June 2017 with the English side.
The other five players are: Almen Abdi (contract until 2016), Cristian Battocchio (2016), Gabriele Angella (2018 ), Javier Acuna (2016) and Marco Davide Faraoni (2018).
Udinese and Watford are both owned by the Pozzo family.
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