Sponsorships
From MMA Tycoon Wiki
You can look at the sponsorship of fighters from two angles - you being the one doing the sponsoring (for your company) or your fighters being sponsored and you taking your 10% cut as a manager.
Sponsoring fighters
When you sponsor a fighter, your company logo will appear on that fighter's profile page and also on the fight reports whenever he fights. Also, you will get a small boost to your company's hype whenever they fight.
Your fighters being sponsored
Check out the sponsors page for more information.