PORTLND — A dispute between the Portland Pirates and their home arena may be headed to court after the sides failed to reach an agreement on a new five-year lease.

Pirates’ ownership and the Cumberland County Civic Center trustees are far apart on some major items regarding revenue, and may ask a judge to decide whether an unsigned, incomplete document constitutes a binding agreement.

The Press Herald (http://bit.ly/14mgjwc ) reported that in a proposed lease negotiated in April, the sides agreed that the Pirates would get 57.5 percent of net food and beverage sales.

The chairman of the trustees said an attorney contacted state liquor officials to make sure the revenue-splitting plan was legal. The officials said state prohibits the Pirates from sharing revenue from alcohol sales because the team does not hold the liquor license.