Free players -
Switch the first two digits of the price with zeros when players cost more than 
£23,000,000. 

Extra money -
Place your best player on the transfer list for £999,999,999. He will be bought 
for that price within a few weeks.

Infinite money -
Increase the pay of one of the coaches to £999,999,999 per week. Then, offer 
him a new contract. The coach will now want a contract for approximately -
£14000000 a week. Accept the contract to receive that amount in your account 
every week.