Not a big fan of Siraj. IMO, he benefitted immensely from the fact that he is playing for the RCB, at least during the starting years. Siraj has been given a lot of opportunities so far, and he hasn't made use of them in an effective way. I would rather prefer someone like Thangarasu Natarajan, who has an excellent record in Australia (where the T20 world cup is being played). There are a few other options as well, such as Mohsin Khan, Mukesh Choudhary and Kuldip Yadav (not talking about Kuldeep Yadav). And I wouldn't prefer Khaleel, Umran or Avesh, since they have received enough chances till now.