It sounds like he has added some decent muscle but the comment on him being on the floor in some capacity makes me think he won't be a large contributor.
Martin impressed with Mitchell Smith, has put on 20-25 lbs. Impressed with his toughness. "He doesn't back down from challenges." Has been maknig 3s. "I'll be shocked if he's not on the floor in some capacity."
https://twitter.com/Dave_Matter/status/987034285839388672