Now 30, the Irishman says he wants to stay in football for as long as possible.
He told the Daily Mail: "I have been in touch with the people back home about starting my badges.
"I wanted to start in the summer that I broke my leg (2017) but, me being me, I thought everyone would be thinking, 'He must be worried about getting back from his injury'.
"So I parked it until I got back. I might start this summer, we'll see, but it's something I'm interested in. I sit at home and study football, I watch managers in training. I try to learn. I'm football mad, really. Football is my life. I want to be a manager. It's something I definitely want to do."