France had "taken note" of the formal request that Britain had made on Friday for an extension to June 30th, the source said, adding: "We are waiting for a credible plan between now and the (EU) summit on April 10th, when we will study the request."
"A delay is a tool, but it is not a solution in itself," the source said, The Local France reports.
In a letter, British Prime Minister Theresa May told EU Council president Donald Tusk that she wanted to ensure her country left the bloc in an "orderly way", as she fights to have the current exit deal approved by parliament.
The EU has already agreed to move back the original March 29th deadline to April 12th to give May more time to win backing from MPs for a deal.
British lawmakers have already rejected the deal she negotiated with the EU three times.
