Louise Evans from business advisors Grant Thornton says promotion could be worth up to £150m for the club and will have knock-on benefits for the city and Wales.
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It will represent another boost to the region, after the announcement Deca Sealand was chosen for a repair hub for defence aircraft.
The Welsh Government says it will enable more than 3000 new students to study healthcare related courses across Wales.
All this week, we're focusing on the Valleys and what makes them so special to the people that live there.