Baggies Net Bury Star
Worrall, 16 will join the Hawthorns immediately for a fee of £50,000 from the Gigg Lane club.
The Midfielder came from the ranks of the Bury youth system in just his second year as a scholar.
This month Worrall made his Football League debut as a substitute as the Shakers lost 2-0 to Bristol Rovers.
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