The forward signed his camp contract Thursday, allowing him to try to mount a comeback but not guaranteeing a spot on the team.
The 35-year-old Wells earned a reputation as a hothead during his earlier years with the Portland Trail Blazers. But he connected with new Minnesota coach Rick Adelman during stops in Sacramento and Houston, and the Wolves hope he can add some veteran toughness to a very young team.
The 6-foot-5 Wells will provide some much-needed depth at shooting guard for the Timberwolves.
Signing Wells and Lee gives the Wolves 16 players on their roster. That means they will have to make a move with another player before the regular season opens Dec. 26.