Wests Tigers may be granted salary cap relief to sign another player as back-rower Liam Fulton considers whether to hang up the boots because of a series of concussions suffered this year.

Fulton, who has decided to stand down from playing for the rest of this season, is believed to be contemplating his longer term future after receiving a report from Paul McCrory on the results of scans he underwent last week in Melbourne.

Knockout blow: Liam Fulton has been forced from the field with concussion four times in six matches this season. Credit:Getty Images

Dr McCrory is a neurologist and sports physician with particular expertise in traumatic brain injury.

The 29-year-old Fulton has been forced from the field with concussion four times in six matches this season and been stood down from playing the following match on each occasion.