A banking source on Friday told Reuters that the banks that renegotiated the debt of crisis-hit Italian industrial group Fiat might agree to modifications in Fiat's industrial plan if the company proposed it.

Fiat chief executive Alessandro Barberis said on Thursday he believed in the restructuring plan worked out with its banks, but several businessmen have floated their own plans for Fiat recently, pushing up the share price, Reuters noted.

"Any changes would have to come from Fiat and ... we are open to eventual modifications," the source told Reuters.