With Brogdon and Sabonis (or Turner), they already have that. Best of all, because both Brogdon and Duarte can play multiple positions, the Pacers can gee or haw with free agents. Maybe they feel they need a quick, athletic PG who can create his own shot and is a willing passer. Sexton would make some sense. If they felt they needed more shooting and a steady hand, Jalen Brunson could be had. If they want to get bigger and want to push the ball up the court, there's always Miles Bridges as a wing, with Brogdon moving back to PG. Duarte allows them to spend relatively big elsewhere while keeping that shooting guard spot adequately filled.
In today's NBA, with its dearth of quality choices, that's pretty high praise.