Simbu's dance in 'Asal'

It has not been confirmed but this news seems to be doing the rounds.
It's said Simbu is doing a guest role in Ajith's 'Asal.' This has been refuted by 'Asal' unit but there's a small element of truth in it. It seems Simbu is doing only one dance number and he is himself going to sing that song. Simbu is a big fan of Ajith. In every film of his, he utters some praise or other of Ajith. It seems Simbu has wanted for long to act in at least one scene of an Ajith film. He even told this to Ajith himself, and this song sequence in 'Asal' is the result. After completing the shooting in Malaysia, they will put up grand sets in Chennai to shoot Simbu's dance. Surely Simbu will soon get flooded with offers to do a dance item in many films!