Dwelley signed a one-year contract to return to the 49ers on Monday.
Dwelley wasn't particularly involved in San Francisco's offensive scheme in 2021, as he logged only 185 snaps with the unit. However, he remained a key part of the special-teams group. He should maintain the latter role, but he could also move up the tight end depth chart if either George Kittle or Charlie Woerner suffers an injury.