Sky Sports reports how the 26-year-old has captured the attention of a number of suitors after a series of scintillating performances in Ligue 1 this season, and is expected to leave France in the summer.
AC Milan and Juventus are both believed to be considering moves for the custodian, who has been linked with a Premier League switch as Sir Alex Ferguson and Arsene Wenger both monitor the player's situation.
"There are quite a lot of clubs attracted to him, both in England and Italy, I would lie saying the contrary," Glanz told France Football.
"In France, only PSG and Monaco have the financial means to sign him. He deserves a big club."
Manchester United are already well stocked with David De Gea currently Ferguson's first choice goalkeeper at Old Trafford, but the 71-year-old Scot is thought to be looking to add further competition for the Spaniard ahead of the 2013/14 campaign.
Meanwhile, Wojciech Szczesny has fallen out of favour at the Emirates Stadium, with Lukas Fabianski currently Arsenal's preferred No.1, so there could be an opening for Ruffier in north London.
However, any potential agreement with Arsenal or Manchester United hinges on the blessing of St Etienne manager Christophe Galtier, and the opportunity for the Frenchman to play Champions League football.
"It is the kind of deal we had with coach Christophe Galtier," Glanz added. "He has a lot of ambition and wants to play in a big club with a great project or play in the European Cup.
"But it could be that St Etienne still qualify for the Champions League."