Sold in the summer by Liverpool, the England U21 midfielder has thrived under OL coach Paulo Fonseca.
He told BBC Sport: "The manager has given me the reins to play my football and I'm loving it.
"There's no better position than number six, getting on the ball constantly, finding passes between the lines and using my brain to dictate games. Paulo Fonseca's an incredible manager. He's helped me so much.
"I've discovered things I didn't even know I had as a footballer."
Morton insists he didn't hesitate when OL came in for him last season.
"As soon as Lyon came in, there was nothing else on my mind," he said.
"It's a massive club and the support here is incredible. It was always going to be a big challenge moving away from home but that's what I wanted, and I felt ready. I wanted to show people I could be a leader and hopefully that's what I've done."
Morton has a deal with Lyon to 2030.