Complex sentence: McGowan joined Arsenal's youth team in 1992 at the age of 16, and was with the Premier League club for over six years and made seven appearances (six in the Premier League, one in the FA Cup) for the London side.
Split into simpler sentences: McGowan joined Arsenal's youth team in 1992 at the age of 16. In all McGowan made seven appearances for Arsenal with six caps coming in the Premier League, and one in the FA Cup for the London side.