Sponsorship is a key driver of revenue for a Club and has to be handled professionally to a) obtain initial funding and b) maintain ongoing funding.    

Sponsorship is a mutually beneficial business relationship between two parties, the business and the club.

Clubs should continually seek to find ways to create real value for their sponsors.

While traditionally football club sponsorship's have focused on branding, whether it be jersey sponsors or venue naming rights but football clubs have a large variety of ways to assist businesses achieve their commercial and financial goals. 

There are many different types of sponsorship inclusions and packages which can be offered by clubs.

Football Victoria - Introduction to Sponsorship

Football Queensland - Sponsorship Guide

Australian Sports Foundation