NEW YORK (AP) — Player representatives to the union will discuss the NFL’s latest drug policy proposal during a second conference call.

The call is scheduled for late afternoon and a vote on the changes is possible. The 32 player reps did not vote earlier this week after holding a similar call.

On the table are changes that could provide for HGH testing, which the league and union initially agreed to when the collective bargaining agreement was reached in 2011. But the players have balked at the science in the testing, and also at the appeals process for positive tests.

The union has insisted that a satisfactory proposal to them must deal with a multitude of drug policy issues. Spokesman George Atallah said last week a “piecemeal” agreement did not interest players.