New Delhi: Leaders of Opposition Sushma Swaraj and Arun Jaitley on Friday wrote to Prime Minister Manmohan Singh expressing disapproval over the appointment of the new CBI director in the wake of the tabling of the Select Committee's report on Lokpal Bill in the Rajya Sabha that recommends that a collegium comprising the Prime Minister, Leader of Opposition in the Lok Sabha and the Chief Justice of India appoint the director.