Walker would make for an interesting addition to the Mavericks alongside 20-year-old Luka Doncic and 7-3 Latvian Kristaps Porzingis.
"We all go through it. Every franchise goes through cycles, and when your down cycle hits you, it's never fun," Cuban explained.
In mid-May, Porzingis was seen outside a Latvian club with a bloody face after he allegedly was attacked.
The Nets, Kings, Pacers, Mavericks and Jazz are all expected to pursue Harris in free agency, according to the Philadelphia Inquirer.
The All-Rookie first team has been announced, and it is a mirror of the top five picks in the 2018 NBA Draft.
The All-Rookie first team was a mirror of the top five picks in the 2018 NBA Draft, the first time that had happened since the 1984 draft.
While visiting his hometown of Liepaja, Latvia, Porzingis reportedly got into a fight with a group of Russians, which left his face bloody.
The Mavericks are looking for a third star to add to a potential starting lineup featuring Luka Doncic and Kristaps Porzingis.
Nowitzki wrote: "This is not goodbye. This is THANK YOU Mavs fans, from the bottom of my heart."
Hardaway, who missed the final 11 games of the regular season with a stress fracture, is expected to be ready for training camp.