Kaleta, 20, moves to the Millers in a permanent deal and for an undisclosed fee.
Advertisement
Advertisement
"As a young player the best place to be is where you're given a platform, where everyone buys into you and you buy into a club," Kaleta told the club website.
The wing-back has signed a deal to 2027.
Kaleta moved to Wolves after coming through the youth system at Manchester City.
