Sponsorship is a mutually beneficial business relationship between two parties, the business (sponsor) and the club (sponsored). Sponsorship could be in the form of cash, donated goods and services or access to resources, such as volunteers or greenspace, to a club and in return the business will have an association that may help the business commercially.
When looking at potential Sponsors for your club, it is important to think about the relationship as a Partnership, not a Sponsorship.