The old adage. if you are good enough, you will get noticed and retained. Maybe Jacob didn't impress at the junior levels and Dogs were desperate and took a chance. They themselves have now changed focus and developing the juniors after years of neglect.Great.
More potentially problematic (think religious quackery etc.) recruits from western Sydney - totally devoted to the Manly-Warringah cause (not) - at the expense of the next Jacob Preston, et al, from our own junior league.