Maharashtra BJP chief Chandrakant Patil on Sunday said a discussion on alliance with Shiv Sena will only happen if Chief Minister Uddhav Thackeray considers it. This comes after a letter seeking an alliance with BJP, purportedly written by Shiv Sena leader and MLA Pratap Sarnaik, went viral. "This is an unscientific alliance (Sena, Congress and NCP)," added Patil.