A320 - unlikely to be a full blown takeover by a company whose shares are listed on a stock exchange - there's a ton of regulation around companies having to be transparent to investors as a whole and preventing false markets / insider dealing and other forms of abuse. If there is to be a takeover with an announcement in 10 days time, investor speculation will likely force an announcement or at least disclosure of merger talks to be made earlier.
Could you provide a little more info as to what you've heard or a source ?