Under the law, any Brits who apply for a German passport before the end of the transition period will be treated as EU nationals | Adam Berry/Getty Images Germany to help Brits stay EU citizens during Brexit transition period Berlin sends message to Europe-friendly Britons.

Britons living in Germany who meet the requirements will be able to become German citizens during the post-Brexit transition period, according to a bill being drafted by Berlin.

The draft law, called Brexit-Übergangsgesetz (or BrexitÜG for short) and seen by POLITICO's Brussels Playbook, is being prepared to allow a Brexit transition period, which was agreed to in principle by negotiators earlier this year, to be translated into German national law.

If passed, the law would treat the U.K. legally as an EU member until the final day of the transition, with any Brits who apply for a German passport before the end of the period to be treated as EU nationals. That will enable them to keep both their British passport and their new, EU one, despite the fact Germany generally doesn't allow dual citizenship.

Linn Selle, the new president of the European Movement Germany, said she is pleased with these “generous rules for British nationals,” which will send “the right sign for the Europe-friendly Britons.”

“After all, only [52 percent] wanted Brexit. Most of them would probably know by now that they better remain Europeans. A German EU passport can certainly help,” she said.

Although the transition period along with other aspects of the withdrawal such as citizens' rights and the U.K.'s financial settlement have been agreed in principle, these agreements will be voided if Britain crashes out of the European Union without a trade deal.