Diego Della Valle is stepping down as Fiorentina president.

Della Valle has clashed with coach Cesare Prandelli in the last week and announced his resignation through the club's website yesterday.

"I write to everyone who loves Fiorentina to explain that from today I am no longer the patron of this club," said Della Valle.

"The subtle manipulation that someone has lately tried to work on the club, striking its fans, has overstepped every mark of toleration and any change in my behaviour would not modify its seriousness.

"Seeing the club put by so many in the dock after having done nothing other than defend with strength the values and dignity of the Viola jersey is not acceptable to me and above all not right.

"I tell the true fans to keep their eyes open, to not be used by those who want to destabilise the rapport between supporters and the club.

"Stay close to this administration that has given and will continue to give its best to create new dreams.

"Make sure my brother Andrea remains close to the club with all the passion he has always shown. Few like him are able to balance heart and the necessary directorial qualities to lead an important football club like Fiorentina.

"All of you, the real fans, continue supporting these lads who step on to the field, because they are a fantastic and generous group. Always defend the values of the Viola jersey."