The NBA’s initial proposal for a new collective-bargaining deal called for a $45 million per team hard salary cap along with non-guaranteed player contracts and significant cuts in annual salary increases.

The details, spelled out in an April 26 memo issued by National Basketball Players Association Executive Director Billy Hunter, marks the league’s push for a major overhaul of the NBA’s economic model and emphasizes to players an aggressive bid to significantly slash costs and shorten contracts.

The memo was sent to all NBA players and was dated just days prior to the league delivering to the union a new labor proposal, which a source said still included the $45 million hard cap but added a phase-in of the cap over a few years. Union president Derek Fisher publicly dismissed the latest proposal as too similar to the original proposal.

The memo’s most eye-popping element is the league’s proposed $45 million hard cap, which cuts the current $58 million soft cap by nearly 25 percent.