I'm not sure how repaying this loan via a dividend is going to be advantageous to the football club.
To pay a dividend the football club is going to have to show a profit, which means that there will be corporation tax liabilities.
A dividend has to be paid to all shareholders, so for Lai to get (say) £5 million, the minority share holders would get around £1 million. Add in corporation tax of around £1 million, that's a sum of around £7 million.
The only place that can come from (as things stand) is the football club.
It would be cheaper to write it off.