sentences:  Controversy arose when Shakib left to play for the Barbados Tridents of the Caribbean Premier League, allegedly without informing board officials and without obtaining a No Objection Certificate from the board, a claim he has denied.Shakib found himself embroiled in further controversy after a dispute with coach Chandika Hathurusingha led to rumours of him threatening to retire from Test and One Day cricket.The BCB has ended the restriction on no-objection certificates being issued to Bangladesh all-rounder Shakib Al Hasan, leaving him free to participate in overseas tournaments.