Complex sentence: Howarth started his career with hometown club York City in their youth system, joining in 1996 on schoolboy terms, before signing a three-year academy scholarship in the summer of 1998 to become a first-year trainee.
Split into simpler sentences: Howarth started his career with hometown club York City in their youth system, joining in 1996 on schoolboy terms. During the summer of 1998 he signed a three-year academy scholarship at York to become a first-year trainee.