Luckless Docker Harley Bennell has suffered yet another injury setback, with the club confirming the speedy midfielder hurt his left calf at training on Monday.

The 26-year old suffered the injury while rehabbing a minor calf strain last week and was forced to finish the session early.

It is suspected that Bennell suffered a calf strain which is set to be confirmed by the club at a later date.

"Harley sustained an injury to his left calf this morning while training away from the main playing group on a modified program," Docker GM Peter Bell told the club website on Monday.

"Our medical staff will await the results of a scan, which will establish the extent of the injury, the treatment required and a recovery plan."

The ex-Sun has played just two senior games for the Dockers since crossing from the Gold Coast at the end of 2015.

Bennell was handed a one-year contract extension by Fremantle last August but his inability to stay healthy is now casting serious doubt that he will ever play another AFL game.

The former pick two's manager Colin Young told 6PR radio last week that retirement had not yet been discussed Bennell should fail to overcome his soft tissue injuries.

"No, haven't had that conversation as yet. We've been fairly confident from about last November until a few weeks ago that it should be tickety-boo," Young said.

"He's been extremely confident of playing hopefully 22 games this year and helping Freo get into the finals."