Do they? Gorgui Dieng is also a new signing by the Hawks, and figures to be ahead of Jahlil in the rotation given that he's been a productive NBA player for 8 seasons now.
I'm glad Jah has caught on for the time being and would obviously love to see him stick here in Atlanta, but I think he's really got work to do to earn a permanent roster spot, let alone real minutes. It's a non-guaranteed contract, so I'll consider it a win if Jah makes it out of training camp and earns a regular season roster spot (even if it's a two-way G-League deal).