Oladipo thrived during his first year in Indiana, averaging 23.1 points and 5.2 rebounds per game.
The Pistons have missed the playoffs the past two seasons, but team owner Tom Gores reportedly wants Van Gundy to return next year.
Paul George has a player option for 2018-19 with the Thunder, but is expected to opt out and become an unrestricted free agent.
Bickerstaff will replace David Fizdale, who was fired on Nov. 27 after a 7-12 start to the 2017-18 season.
New York reportedly has finished interviewing candidates to replace Jeff Hornacek, who was fired in April after two seasons.
The Sixers collapsed defensively and offensively during their 117-101 loss to the Celtics in Game 1 on Monday.
Leonard, who appeared in just nine games this season, had a tense relationship with the Spurs throughout 2017-18.
Curry hasn't played since March 23 due to an MCL sprain, but coach Steve Kerr won't have him on a minutes restriction when he returns.
The Celtics earned a Game 1 win over the 76ers on Monday despite playing without Jaylen Brown and Kyrie Irving.
76ers coach Brett Brown wanted his players to understand the rich history of the team's historic rivalry with the Celtics before Game 1.