Manchester United midfielder Scott McTominay believes he can play into his 40s.
McTominay says as he's a late developer he's confident of extending his playing career.
He explained on manutd.com: "My dad was brilliant because he would always say: 'Just take your time, son'.
"'You're going to grow and you're going to get bigger,' because he knows, doesn't he?
"As a kid, you don't know that. And you always think: I'm always the latest one. But then, when I did grow, when I was 17 or 18, I was sat next to him and I was above him.
"I was like: 'What's going on here? Four years ago, you were saying to me not to worry, and now look.'
"I'd be thinking to myself: I'm bigger than my dad and he's six-foot two! So it's crazy in that respect.
"The way I see it now is that I grew maybe four years after everyone else, so my peak years are going to be four years later too.
"So I'm 26 now and my body age is technically like a 22-year-old. When I'm 30, I might feel like a 26-year-old. I might retire at 38 or 40!"