His stated directorships in the UK are worth a few million. According to a wealth fund manager I know (and without wanting to sound too much like HB&B) "He's not a billionaire yet, but he'll be there within 18 months at this rate'.
It does but there are transitional rules for 2015/16 that allow a £13m loss until the new rules kick in to coincide with the new PL TV deal next season.
Errr.......take a look at the club's cash flow statement and intangible asset note in the accounts and you can quite easily work out how much has been spent on players.
The reason why the club has kept the information secret usually under TB is to stop other clubs knowing how much we have...