A special committee of board members has narrowed its list of potential bidders since the company put itself up for sale in August, and is now pushing for quick resolution, the newspaper said.

Microsoft's deal to take over Nokia's devices business revived optimism that the smartphone maker, which is bleeding market share to Apple Inc and Samsung Electronics Co Ltd, can also unearth a willing buyer. Its shares closed up 5.3 percent on the Nasdaq and 5 percent in Toronto on Wednesday.

BlackBerry declined to comment on rumor and speculation.

(Editing by Andre Grenon)