Madhuri to do an item number in Ranbir's 'Yeh Jawani Hai Deewani'?

There has been buzz for a while that Madhuri Dixit will be doing an item number in Ayan Mukerji's Ranbir Kapoor-Deepika Padukone starrer

But sources close to her maintain that this is mere speculation. Hmmm... Time will tell.