By BEN JAYCOCK
On target: Sheffield’s Callum Posa
CALLUM Posa has been one of National Two North’s best playmakers, continuing to upgrade his skills year on year under his father and head coach, Anthony.
Posa senior balances his time at Sheffield with coaching Croatia but with World Rugby’s ruling only stretching to grandparents, Callum isn’t permitted to play under his father for club and country.
Nevertheless, the 22-year-old has played a pivotal part in his club’s best ever finish in the National Leagues of second, while also scoring more po…