Fabregas has long been linked with a return to the Spanish giants.
“Barca is not disposed to pay £43.9million for Cesc Fabregas next summer,” said Rosell in an interview with Catalan newspaper Sport.
“That is decided and, although Guardiola demands this player, we will not pay this amount.
“It is impossible due to a simple reason. In football, prices are reduced each year and, if we offered Arsenal £35.1million for Cesc last summer, €50m is now impossible.
“If the coach demands Cesc we will negotiate with the Gunners, but at a correct limit and without madness and, if the operation is not possible, we will wait for other opportunities.
“Our relationship with Arsenal is not good. The Toral issue has not pleased us.
“The future of Cesc is in his hands and we could only negotiate with Arsenal if Guardiola insists. Only with any sale is it possible to increase the money for the negotiations.”
