The Chicago Bears are pursuing a trade of Brandon Marshall.

The key date to keep in mind with Marshall is Thursday, March 12. That is when his base salary of $7.5 million for 2015 becomes fully guaranteed.

The Bears sent two third round picks to the Miami Dolphins in 2012 to acquire Marshall. Chicago is likely looking for a mid-round pick in exchange for Marshall.

Marshall caught 61 balls for 721 yards and eight touchdowns in 2014.

Alshon Jeffery would become the No. 1 wide receiver for the Bears, who has a similar skill-set as Marshall.