Fiorentina president Andrea Della Valle remains angry over their defeat to AS Roma.

Della Valle fears the defeat will cost them Champions League qualification.

Fiorentina were beaten 1-0 in stoppages on Saturday evening, but only after Daniele De Rossi's handling offence was not spotted by Paolo Silvio Mazzoleni.

"There was a serious error of judgment that could cost us €30m," said Della Valle of the denied penalty.

"It is an important sum and it could make a big difference for us. Referees are human and I want to think it was only a mistake, so that there is nothing bigger behind it..."