At international level, he represented the France national football team on two occasions between 2007 and 2008 and was an unused member of the squad that took part at UEFA Euro 2008.

[citation needed] Following two promising seasons at Cannes, Frey began to attract attention from abroad, most noticeably from Inter Milan whom had been notified of his exceptional talents by former keeper Walter Zenga and Serie A rivals Juventus.

[citation needed] In the summer transfer window of 1999, Frey moved on loan to Verona, where he played thirty league appearances and helped the team in order to avoid relegation.

[citation needed] The following year, he returned from loan to play for Inter, as the club sold Angelo Peruzzi for cash and Marco Ballotta.

However, the team played below expectations, and the club decided to make several changes to the squad; after the arrival of Francesco Toldo from Fiorentina, Frey was placed on the transfer list.

[citation needed] His experience in Parma was positive and provided ample opportunity for Frey to demonstrate his talent and justify the trust placed in him by the club.

[citation needed] Frey joined Fiorentina on loan for the 2005–06 campaign, and signed a permanent deal with the club for €6 million (€5.6M went to Parma)[7] at the end of the year following a glittering season where he formed the backbone of the team along with Cristian Brocchi, Stefano Fiore, and Luca Toni.

After a positive first half of the season for him and his team, on 10 January 2006, during a match in the Coppa Italia against Juventus, he received a blow after a conflict with Marcelo Zalayeta.

[citation needed] Due to the clash, Frey received blunt trauma to the tibia, which ruled him out of the starting line-up for several months, forcing the club's sporting director Pantaleo Corvino to hire a replacement, which turned out to be Romanian keeper Bogdan Lobonț.

[citation needed] On 2 November 2010, Frey injured his knee during training, suffering an Anterior cruciate ligament injury,[9] ruling him out for the rest of the season.

Before joining Genoa, Frey revealed talks with French spenders PSG during the summer transfer window, but the capital side eventually acquired Palermo goalkeeper Salvatore Sirigu instead.

The experience I had in Bursa and Turkey will always stay with me and I'll remember it with great joy and pleasure.. " On 15 July 2013, Frey joined Turkish club Bursaspor for an undisclosed fee.