Andrew Bogut has lashed the "two-faced" elements of the NBA that raised questions about his value to former team Golden State.
The Australian, who won a championship with the Warriors in 2015, was offloaded to Dallas at the end of last season to make way for prized recruit Kevin Durant.
He was injured for the crucial last two games of the finals series loss to Cleveland in June, with franchise "sources" speaking out to media about their annoyance over the centre's lack of durability.
"I don't buy into the sources thing. I don't buy into all that s**t because this league is so two-faced and everybody is so fake," he told USA Today ahead his return to the Warriors' Oracle Arena with the Mavericks this afternoon.
"The same people who made those comments will see me tomorrow and shake my hand and ask me how my family is. This league is full of people who are full of s**t and shallow.
"It's very hard to meet a genuine person who you can call your friend in this league."
Bogut does not expect any additional emotions when he steps on court despite admitting he was disappointed and bitter about his exit, but he admitted to having a below-par finals.
"There's no doubt it's disappointing to leave one of the best teams record-wise those last two years," he said.
"It was bitter in a way. I wasn't mad at anybody about it. I understood it completely. I'm not stupid."
His Mavericks have had just two wins this season, while Golden State are 5-2 but are under-performing defensively without the 32-year-old Boomers centre and Harrison Barnes, who also joined the Mavericks.
"I think defensively that I provided something for them that really helped that team win games," Bogut said.
"Obviously, (Warriors forward) Draymond (Green), we had a really good sync defensively where when he got beat, I was there. When I got beat, he was there, and it was automatic."
"We knew how to play and Steph (Curry) and Klay (Thompson) did a good job of funneling guys to me and Draymond.
"Obviously they have to adjust to that when they go small now."