BY A STAFF REPORTER: BJP MP Arjun Singh's joining the Trinamool is just a matter of time. There have already been posters in his name welcoming the Trinamool. However, Arjun Singh has not said anything about it so far. However, quite suggestively, he said, "Maybe i have to go to Kolkata in a while. You'll know when something happens. A lot of time has been given to the Centre on the jute industry. The countdown begins on one side and the countdown ends on one side. Time will tell if I will stay in the BJP or not. ''