Consider the fact that the contract may require them to pay us a percentage of the gate based on a minimum number of seats sold. Hence the statement "yankees are on the hook for ticket sales."
In the simplest example, say we wanted to make a guaranteed $1.5mm to match home revenue. We know the stadium seats 50k for football, and that the Yankees will price the seats at an average price of $60 per seat. We tell them, Rutgers get 50% of the gate, with Yankees guaranteeing a sell out crowd. If the Yankees fail to sell out, Rutgers still gets paid $1.5mm. If the Yankees do better than expected on pricing, Rutgers makes more. If the Yankees do worse, they eat the loss. They get all the concessions.
Simple stuff guys. It is the same argument every time a contract is discussed on here. Everyone shoots from the hip without knowing anything about it. Without seeing the contract, you have no idea if it is a good or bad deal.