Restricted free agent F/C Daniel Theis has agreed to a two-year, $10 million deal to stay with the Boston Celtics, CAA agents Michael Tellem and Aaron Mintz tell ESPN.

Theis will compete for minutes in the frontcourt, including at backup center. Boston lost five-time All-Star Al Horford in free agency, but signed free agent center Enes Kanter to a two-year deal and return 2018 first-round pick Robert Williams.

Theis, 27, has averaged 5.5 points and 3.9 rebounds in his two seasons with the Celtics.

Theis, a four-time German All-Star, played two seasons with the Brose Bamberg of the EuroLeague.