The 32-year-old Aussie, who is currently serving a 12-month ban following the ball-tampering scandal, has kept himself busy playing in T20 leagues around the world in a bid to stay fit and ready for a national recall after his ban ends on 29 March 2019.
Warner returned to competitive cricket with stints in the Global T20 Canada and the Caribbean Premier League.
He made just 109 runs in eight innings at a strike-rate of 114.73 for Winnipeg Hawks in the GLT20, and followed it up with 220 runs in nine innings at a strike-rate of 111.67 for St Lucia Stars in the CPL.
Warner has also played grade cricket in Australia and, along with Steve Smith, was recently at the SCG to train with the Australian team.
Warner will be joined in BPL by Smith, who had earlier signed up with Comilla Victorians.