The Chicago Cubs’ Carlos Zambrano, who was put on the disqualified list by the team over the weekend after he walked out on them after Friday night’s game, has filed a grievance over the suspension, with paperwork expected to be completed today, according to Jon Morosi of Fox Sports.

Players on the disqualified list do not get paid for 30 days and cannot have any contact with the team. Zambrano, however, told Chicago sportscaster David Kaplan that he was sorry and did not mean to hit Chipper Jones, and that he wanted to come back and apologize Saturday, and did not mean it when he said he was “retiring”.

Zambrano has had a history of blowups and meltdowns over the last several seasons, including a dugout tirade against then-teammate Derrek Lee in 2010 that got him placed on the restricted list and anger management counseling. It appears that Cubs management is fed up with him to the point that they no longer want him on the team. Over the weekend, MLB sent out a press release that said that during the suspension:

Major League Baseball and the Major League Baseball Players Association will discuss recent statements attributed to Zambrano regarding his baseball future.

It’s possible that the Cubs, the MLBPA and Zambrano and his agent might work out a buyout of the final season of his contract, set to expire after 2012 (it has a vesting option for 2013 whose conditions Zambrano is unlikely to meet), and make him a free agent.