Pistons coach Stan Van Gundy didn't want to scrap a trade he was convinced would make his team better.
He had no other choice.
Detroit rescinded a three-player, three-team trade with the Houston Rockets and Philadelphia 76ers on Monday, negating it because not all the players involved were cleared medically.
Houston had traded guard Marcus Thornton and centre Donatas Motiejunas to Detroit last week for centre Joel Anthony and a protected, first-round draft pick this year.
The Rockets also made the move to acquire the draft rights of forward Chukwudiebere Maduabum from Philadelphia.
Van Gundy, who also serves as team president, regretted the deal had to be ditched.
"It's disappointing because we saw the possibilities with Donatas, but I'd do it over again," he said before the Pistons played the Cavaliers. "We did our due diligence and thought it was too much of a risk."
The Pistons did not specify any medical information due to privacy issues.
Van Gundy said Anthony will rejoin the Pistons for Wednesday's home game against Philadelphia.
"I've never been through a situation like this," Van Gundy said. "It's a little bit awkward, but I'm glad it happened with a guy who is such a true professional in Joel."
Thornton averaged 10 points in his first 47 games with Houston. Motiejunas started 62 games for the Rockets last season, but appeared in just 14 games this season after having back surgery. Anthony has been a seldom-used reserve for the Pistons.
The Pistons kept Thornton and Motiejunas out of Sunday's game against New Orleans because the trade had not been finalized.
Motiejunas went through extensive tests in New York, and they weren't finished before the game started. He had season-ending back surgery last April, didn't play again until early December and has been sidelined again since Jan. 1 with recurring pain.