The 45-year-old The Kills frontman reportedly wants to surprise Moss with a stylish apartment in Paris as she is fond of the city, reported Daily Star.
"He knows Kate has always loved Paris. He told friends he wanted to get her a little artist's-style pied-a-terre for around 250000 pounds. But he'll spend as much as he can to make her happy," a source said.
Moss will be turning 40 on January 16.