Despite being out of the rotation for most of this season, Terrence Shannon Jr. has the potential to be a sneaky difference-maker for the Timberwolves as they look to close out the Nuggets in Game 6 on Thursday night. He put up 15 points off the bench in Monday's Game 5 loss, and his scoring punch could be useful for Minnesota without the injured Anthony Edwards and Donte DiVincenzo. But in order for head coach Chris Finch to trust Shannon in a meaningful role where his offense can be impactful, he has to lock in on the defensive end of the floor. After Monday's game, Finch said he thought Shannon's "first shift was full of a lot of game-plan mistakes" defensively, adding that "we've got to clean that up for sure." On Wednesday, speaking to reporters after practice, Finch was asked to follow up on how they can clean that up with Shannon. "I don't clean that up," Finch said bluntly. "He cleans it up. ... The only way I can clean it up is to sit him on the bench. That's the only way I can clean it up.…