"It gives you a kick up the backside doesn't it, it just makes you realise a few things. I've gone away, got my head down and I've come back and I'm working hard. You have to grow up, the manager's had a word with me at the start of the season and I've grown up a bit."
"Was the time there hard? Not really. I look at every opportunity as a good step. I went down there and did the business and I've come back here and done the business. I know some people were disappointed in me up to going out on loan. Hopefully I'm repaying them with my performances." he added.
And repaying he is!! since coming back into the fold as a midfielder back at the end of October, The Millers have been a formidable force to be reckoned with and have steadily moved up the league.
"Without doubt, this is the most enjoyable period of my career, It's the most games I've played consistently and I'm finding good form." He told the 'Tiser
"Every season of my career I've had a relegation battle, so it's nice to be at the other end of the table and experiencing different pressures and fighting for promotion for a change."
There is however dispute between boss Mark Robins and Pablo of where the 23 year old's best position is, with Robins saying he's a better midfielder, however Mills disagrees.
"I'm enjoying it at the moment but I'll still tell you I'm a defender. Having said that, I've always been comfortable on the ball. As a kid, I started out as a striker and gradually moved back to defence. Now it looks like I'm going the other way again!"
"The good thing about playing in the centre of midfield is that I see plenty of the ball. I'm comfortable in any position I play. Hopefully the fans can see that I can use my feet as well as my head." he added.