Have to disagree with Andy here. Obviously, I don't know Ricky but anyone on twitter who followed Miller would know he seemed to be going all out this season to earn a full-time contract elsewhere. I mean, Jesus wept, some of that healthy rabbit food he posted pics of.... ugh.
But it was plain he was working hard, harder than most, and it's paid off. You can say "it's all about the money", but isn't what furthering your career is about for everyone? People go to uni, do degrees to get better jobs. And whether you work in an office, a supermarket, a bank, you ultimately aim for promotion because you want cold hard cash. He's gone about it as every young footballer should, and let's be honest, how many young footballers go in that direction at his age? Not many, I bet.