The 18-year-old winger has been flying recently after his return from the injury sustained in April.
He said: "I wondered if I would be able to play again; that was my first thought. I knew I'd done something really serious so I was really concerned.
"But my family kept me confident that I'd be back to how I was.
"There were days when I would go into training and I would be sad or disappointed because I could see the boys outside training and you just want to be out there with them.
"So I had the dark days but at the same time I had positive days as well."
He added: "When it came, it was more anger for me because everything was going as I wanted it to go.
"I was playing games, I'd got called to the national team - everything was going perfectly.
"There were big games coming up. But I knew when I came back I'd be stronger than I was before."