Tottenham have struck a landmark deal which will see them exploit a potential commercial goldmine worth up to £10million. Spurs are among the best clubs in world football when it comes to extending their brand into overseas markets, and their latest arrangement continues the trend. As reported by Sport Business, the Premier League have this week agreed a media rights deal with Japanese streaming service U-Next, who will now air the competition in the territory from next season. That news comes a week after the top flight signed a similar agreement for their broadcast rights in South Korea, whe…