NBA free agency begins Tuesday at 6 p.m. ET

NBA free agency will officially begin Tuesday at 6 p.m. ET. Several agreements have already been announced, and trades have continued following a major deal completed before the draft.

Five free agency storylines to watch The future of one prominent unrestricted free agent will dominate early discussions. If the player leaves his current team, a sign-and-trade could be required, otherwise the player may be limited to the non-tax midlevel exception.

Blockbuster trades remain possible. Two stars have already changed teams in June, and additional moves involving other prominent players are under discussion. Star contract extensions are also expected. Multiple players across the league are eligible to sign extensions this summer, and one recently traded player will become eligible for a four-year, $275 million max extension six months after the trade is finalized.

Potential penalties under review The league is investigating one team's salary cap practices. Commissioner Adam Silver said before the NBA Finals that the investigation into a deal involving Aspiration is nearing completion. Silver stated that finality is needed so the team and the other 29 teams understand their operating situation.

Penalties for violations could include loss of draft picks, fines, and executive suspensions.

Restricted free agency outlook Several restricted free agents are expected to test the market. With only two teams projected to have significant cap space, negotiations between players and teams will determine whether deals are reached quickly or drag into the fall.