"It's been important for me to get to know the coach and his staff very well over the past few weeks because the creation of a strong mentality around the squad environment is really important to the job of bouncing back."

Giaretta played for Monza, Carrarese, Pro Sesto and Lecco in Italy before moving upstairs with Novara, Udinese, Ascoli and then CSKA.

Watford finished 19th in last season's top flight with 34 points and were relegated along with Norwich and Bournemouth after sacking manager Nigel Pearson with two games of the campaign remaining.