The Dallas Mavericks have some limited wing depth this year as of now. Harrison Barnes, Luka Doncic and Wesley Matthews will likely share the wing duties in the starting lineup. At this time it is unclear where Coach Carlisle wants to put these guys as far as position is concerned. Regardless, all three of them will likely see time at the wing positions this season.
Off the bench, the Mavs have some question marks. Ryan Broekhoff and Devin Harris appear to be likely recipients of minutes at the 2 and 3 spots. That remains to be seen, but they seem like the obvious backup candidates.