The NBA has sent out a memo to all NBA teams in an effort to curb tampering, league sources told Shams Charania of The Athletic.

The memo proposes increased fines for teams and players caught tampering. The new rules would fine teams $10 million for tampering with a player, an increase from the current $5 million fine.

Teams can also be fined up to $6 million for unauthorized agreements, with players receiving a $250,000 fine.

The potential new rule would also force NBA owners and a member of a team's basketball operations to certify that they did not break any tampering rules when signing a player to a contract.

The NBA Board of Governors will vote to pass the new rules on September 20th.