Per Sean Deveney of Sporting News, one source said it was "a matter of when, not if" the Mavs would deal Smith.
Mavericks head coach Rick Carlisle told reporters Friday that Smith is "welcome to rejoin the team at any time" and they would "love to have him back."
Per ESPN's Tim MacMahon, the Mavs have had "productive communication" with Smith but aren't expecting him to play on their upcoming two-game road trip against the Indiana Pacers and Milwaukee Bucks.
Smith has missed each of Dallas' previous four games. Carlisle said his absence was due to an illness, although Deveney noted that Smith has "butted heads" with his head coach. The 21-year-old has started all 28 games he's played, but he reportedly doesn't like how his role has changed with Luka Doncic's increased involvement in the offense.
Drafted No. 9 overall in 2017, Smith is having a solid sophomore season. He's averaging 12.6 points per game and is shooting 37.5 percent from three-point range.