Columbus Blue Jackets forward David Clarkson failed his physical Wednesday and will not begin training camp because of a back injury, president of hockey operations John Davidson said.
"Every time he tries to work out, it's bothersome," Davidson told the Blue Jackets website.
Clarkson, 32, played in 23 games last season, missing time because of the injury, among other ailments. He had two goals and two assists.
Clarkson has four years remaining on a seven-year, $36.75 million contract he signed with the Toronto Maple Leafs before the 2013-14 season. The Maple Leafs traded him to the Blue Jackets in February 2015. After playing in three games following the trade, Clarkson sustained a torn oblique muscle and missed the remainder of the season.
Forward Zach Werenski sustained a groin injury at the Traverse City Prospects Tournament last weekend but will not miss any time, Davidson said.