Baldelli, who spent last season as the Tampa Bay Rays' major league field coordinator, is just 37 years old and has no managerial experience at any level.
Baldelli's name had been linked to several of the manager openings around the league.
The team will introduce Baldelli at a 3 p.m. press conference at Target Field.
A talented player whose key RBIs helped Tampa Bay in its ALCS victory over the Boston Red Sox in 2008, Baldelli was forced to retire in 2011 because of a condition later diagnosed as mitochondrial channelopathy, a disease that obstructs neurological pathways and leads to extreme muscle fatigue. He posted a 305-343 record in four seasons as skipper in Minnesota. It wouldn't involve staying with the Twins.
Twins bench coach Derek Shelton and Chicago Cubs bench coach Brandon Hyde also were brought to Minneapolis for interviews. He, of course, is known for his eight-year big league career, mostly with the Rays. Injuries ruined what looked to be an exceptionally promising career for the former No. 6 overall pick (Rays, 2000), who debuted in the Majors as a 21-year-old back in 2003.
Baldelli will be the youngest active manager in the majors.
A source with knowledge of the situation confirmed Baldelli's hiring to KSTP Sports early Thursday morning.
Ron Gardenhire coached under Kelly until taking over the job in 2002.
- The Minnesota Twins' search for a new manager appears to be over.
The Pohlad family, who owns the Twins, has a reputation for maintaining the status quo, but Jim Pohlad has shown more of a willingness to shuffle the deck following the passing of his father, Carl, in 2009.