BlackBerry is expected to announce a definitive merger agreement with Fairfax Financial Holdings on Monday -- or present an alternative bidder to help get the company back on track, with the latter group including the likes of Qualcomm. Six weeks have passed since a consortium led by Fairfax announced it had bid approximately $4.7 billion for BlackBerry. The terms of the bid allowed for Fairfax to conduct a six week long due-diligence investigation that ends on Monday, while allowing BlackBerry to enter into negotiations with other bidders.