Playing Turner in the top grade this early after a very serious injury & a long lay-off is fraught with danger in more ways than one!!
He will be tentative no doubt, which can be a dangerous thing for his welfare in itself, in the top grade of a heavy contact sport.His tentativeness will therefore spell danger for the team.
Carter,I thought,was being groomed for the cauldron of the finals where his toughness,skill & versatility will be a big bonus!!
I would go with Carter,then Brown,& Turner as a last resort at this latter stage of the season.
In fact,I'd be telling him to recuperate until season's end then return in 2016.This approach would be in his, & the team's best interest.