NEW YORK (AP) The NBA players' union has sent a proposal for a new labor agreement to the league, an official with knowledge of the bargaining process said Friday.

The proposal was delivered Thursday, although no details were provided by the source, who spoke to The Associated Press on condition of anonymity because the sides aren't commenting publicly.

The union said the league's proposal called for reductions in the length and amount of contracts, which would become only partially guaranteed. It also sought to greatly reduce the players' share of basketball-related income from the 57 percent they currently receive.