"Either we can do the deal legally if there is a legal framework," Patrick Pouyanne said in remarks made to CNNMoney Emerging Markets late on Monday. "If we cannot do that for legal reasons, because of change of regime of sanctions, then we have to revisit it."

Pouyanne's office confirmed the interview had taken place.

"If there is a sanctions regime [on Iran], we have to look at it carefully," Pouyanne also said.

"We work in the US, we have assets in the US, we just acquired more assets in the U.S," he added.