I've had a bit of a rethink overnight. You want your halfback to a. Give good service to your outside backs - he does that. b. Combine well with the 5/8 - does that, for some reason Widdop plays better with McCrone. c. Be a good defender - does that. d. Have a good kicking game - has done that 1 game from 3 e. Get the forwards organised and moving forward - cant tell if he does this. I'd keep him for a bit longer, just because he seems to work well with the forwards and Widdop.