The wing-back had his medical this morning and completed the €10m deal, after La Dea swooped to beat Fiorentina, who had only been prepared to sign him on loan with option to buy.

Having joined Juve from Fiorentina in 2005, Chiellini has scored 36 goals in 535 outings for the Bianconeri, and had been expected to leave the club this summer when his original contract expired on June 30.

Chiesa, 22, is considered one of the hottest prospects in Italian football and the move was finalised once Douglas Costa completed a loan move to Juventus.

Runners-up last season and seen as the main challengers to the dominance of Juventus this term, Inter suffered one of their familiar slumps as they fell 3-2 behind to a Fiorentina side inspired by 37-year-old Franck Ribery.

Ribery, 36, who left German champions Bayern when his contract expired at the end of last season, will be unveiled by Fiorentina at a press conference on Thursday, the Serie A club said in a brief statement on their official website.

The 35-year-old played his last game for the Serie A side in May but claimed he wanted to carry on playing, with Fiorentina, AC Milan and Boca Juniors manifesting their interest in signing him on a free transfer over the past month.