Wojnarowski noted the veteran guard will be given a role that will allow him to showcase himself ahead of free agency this summer.
Chris Haynes of Yahoo Sports reported Detroit will release Henry Ellenson to make room for Ellington.
The Miami Heat traded Ellington along with guard Tyler Johnson to the Phoenix Suns on Wednesday in exchange for forward Ryan Anderson. The former North Carolina star was subsequently waived as he sought to join a contender.
Since being drafted in the first round back in 2009, Ellington bounced around the league before settling in in South Beach. It was just a season ago that he set the Heat single-season three-point record (227 triples).
Ellington averaged 8.4 points per game with the Heat in 2018-19 on 37.5 percent shooting, including 36.8 percent from behind the arc.
Playing time has been sparse for Ellington this season. He appeared in just 25 of 52 contests for Miami prior to the trade, averaging 21.3 minutes per game.
Last month, Heat coach Erik Spoelstra revealed, per Ira Winderman of the South Florida Sun Sentinel, it made him "sick to [his] stomach" that he couldn't give Ellington more minutes.
Ultimately, the team decided this week it was best for the two sides to go their separate ways.
Wojnarowski reported on Thursday that Detroit—who recently traded another former Tar Heel in Reggie Bullock and Stanley Johnson—was expected to be among the most aggressive teams in pursuit of Ellington. The Pistons (33.5 percent) rank 29th in the NBA in perimeter shooting, barely besting the 11-45 Suns (33.2).
Detroit, in the midst of a two-year playoff drought, sits on the outside of the Eastern Conference playoff picture. The ninth-place Pistons (24-29) trail the Charlotte Hornets (26-28) and the Heat (25-27) by 1.5 games.