Last season, Tonga appeared in 15 games and made two starts. He tallied 24 tackles (10 solo), a tackle for loss and a fumble recovery. Tonga played college football at BYU.
Brown is rejoining the Vikings having spent the offseason program with the team after initially joining Minnesota as a 2022 undrafted free agent. After being waived by Minnesota during roster reductions, Brown spent a brief period with the Packers practice squad. He played college football at Miami (Ohio).
Connelly had been activated Tuesday from the Reserve/Physically Unable to Perform list.
Proehl, who suffered a torn ACL during training camp in 2021, has a practice window during which the Vikings can evaluate him.