I would like to sign a sponsorship/pay for the company, which is not necessary to boost the income, but could be some sorts of benefits in other means.
For example ...
1. Sign a deal with insurance company, so in case of any injured players I dont have to pay that salary.
2. Sign a deal with basketball training academy, so I would receive more suggestions/hints on the draft picks selection.
3. Sign a deal with bank company, so in case of in debt I dont have to pay 5% interest rate.
4. Sign a deal with TV/internet company, so in case of TV games, I could get extra income.
5. Sign a deal with catering company/zoo/theme park, so more people attend my home games and boost the merchandising.
6. Sign a deal with entertainment company, so sometimes to have concerts/functions for additional income/revenues.
7. Sign a deal with sports company, so my players could perform better.
8. Sign a deal with coach/flight company, so more people attend my away games.
9. Sign a deal with printing company, so you could rename the arena at no additional cost.
... ... ... ...
10. Sign a deal with betting company, earn more money but keep losing the game.
11. Sign a deal with ghost house, earn additional revenue but lower down the attendance except Halloween.
12. Sign a deal with funeral services company, earn extra income but lower down the fans survey rating.
13. Sign a deal with charity, get full marks in fans survey rating only.
The rule is: Every time we go to "sponsorship/deal" page, it comes up with 3 different offers. You must choose from these 3, otherwise, they will go and you have to wait for a week. Furthermore, some offers pay you money and some offers need you to pay for it. Those you need to pay for are always good for fan survey rating / draft pick selection / attendance ...
It's just my suggestion, please feel free to discuss if you agree with me, or you have an even better idea. :)