In an interview with Chelsea's official website, Levi Colwill was asked about his greatest surprise since joining the club at the age of eight.
It's a tough question because I was just a kid when I came in, so it feels like ages ago.
Probably growing up here and the level of each age group and how it progresses until you reach the first team. There are always improvements, so you can never afford to rest on your laurels. At every step, you can't think you've achieved everything, even now.
Colwill is one of the few academy graduates to cement a place in the current squad, let alone regularly feature in the starting lineup. The 23-year-old centre-back has made a remarkable return to the pitch after a serious injury that kept him out for nearly the entire last season, and he has since regained his position in the first team.