There may well be some bitterness, fuelled by regret, creeping in with Robinson.
There was a point in Summer 2014, when it seemed that things were inextricably coming together for Robinson to get the Lane job. Right at the point that it should have happened - and I won't deny that I was one of the many Blades who wanted him at that point - however, it cooled because McCabe wouldn't pay the compensation to release him and neither would Robinson resign to enable it to happen. At that point, Robinson's stock was high and he had said nothing but good things about United. It seemed a perfect fit.
The moment passed, though, and Robinson will know deep down that by dithering he missed his chance to manage a big city club with serious potential.
That's probably why he's talking up his Charlton role now. A case of protesting too much. Wilder doesn't have to do that because everyone knows who the giant amongst the pygmies is; it doesn't need saying.
Charlton Athletic or Sheffield United? I mean, come on, let's be serious. There's no great mystery or hidden reason why Carruthers chose to come to the Lane.