The future of Brighton's football in the community scheme rests on the club moving to a new stadium at Falmer, says community affairs officer Steve Ford.
The Seagulls are awaiting Government approval for their ground development.
Ford said: "Without Falmer, the future of the club is in severe doubt, and that includes the community scheme.
"The scheme is no longer viable in its current format. Much more could be achieved from Falmer, with 1,000-plus new jobs," he told the club's website.