The Vinnaithaandi Varuvaayaa star is currently busy working on his Love Anthem in the US. The producers, who have signed him for their films, are worried because Simbu is delaying their projects. Films like Vettai Mannan and Poda Podi are in the cold storage from a long time. Adding to that, the actor is supposed to star in his much-hyped film Vada Chennai directed by Vetrimaran in February. Well, this has made the producers to wonder how the 27-year-old could reschedule his dates.