Should the Leafs buy-out Stephane Robidas?

Last summer, looking to add some veteran experience to the team, the Toronto Maple Leafs signed Stephane Robidas to a 3 year contract with a $3M cap hit that some idiots weren't fond of. But, alas, the 37 year old struggled in his first year with the blue and white.

Despite playing by far the easiest minutes among regular Leafs defencemen, the team had very poor possession when Robidas was on the ice (Robidas is the bottom-right circle in the chart):

So what do the Leafs do with Robidas?