Derek Shelton, who coached for the Twins under both Paul Molitor and Rocco Baldelli, will succeed Baldelli and become the 15th manager in team history.
A formal announcement is expected Thursday, which is a day off during the World Series.
Shelton was manager of the Pittsburgh Pirates for six seasons, starting in the COVID-shortened 2020 season, before he was dismissed this year when Pittsburgh started 12-26.
The hiring was confirmed by sources with knowledge of the move. An introductory news conference is likely early next week.
“Shelty is a leader,” Baldelli wrote in a text message. “He’s one of the best baseball people I’ve ever been around. ... Great presence, charisma and sense of humor.
“And he’s a natural when voicing his opinions to the umpires, which I’m sure his players and the fans will appreciate!
“I believe he’ll bring the best out of a lot of guys in that clubhouse and I’ll be pulling for him.”
Shelton was 306-440 with the constantly rebuilding Pirates and never finished above fourth place in the National League Central. He was dismissed on May 8 after that poor start, and Pirates General Manager Ben Cherington said there was too much losing.