Striker Matej Vydra is back with Watford, this time on a permanent basis after signing a five-year deal to join the club from Udinese.
Juventus have exercised the option to buy Argentine Roberto Pereyra from Udinese, the Serie A champions have announced.
Andrea Stramaccioni will step down as Udinese head coach after just one year when his contract expires at the end of the June.
Cagliari drew a line under 11 years in Serie A by beating Udinese 4-3 in their last game before submitting to relegation.
Fiorentina qualified for the Europa League while Stephan El Shaarawy scored his first goal in seven months for AC Milan.
Liverpool give U21s more game time than Premier League rivals but top flight lags behind Europe.