this is true enough, he is a decent player with a good eye for the game...
BUT i am one of those critical of his losses of possession recently. Why? Because it directly lead to Doncaster's goal and nearly one for Gillingham which I think in the end was cleared off the line. Too much dithering in the centre, the way we play, exposes us horribly when we then lose possession. Hope he sharpens up indeed but who of us know if the level will punish us too many times before he manages to? This is the equation Gus has to make and tbh I suspect why he wants to bring Harley in. It's all very well sticking up for a player but we are going to have to be ruthless about personnel in some quarters, if we want to make the kind of progress as a club that would make us all cream our pants. And who wouldn't want that?
By dropping him you MAY cut out occasional mistakes (which he may well cut out himself if given a run in the team), but you WILL cut out the chances he creates.
He has some great qualities in his game which will be hard to replace. Don't be so quick to overlook them.