NBA referees are too "emotional", according to former player Gilbert Arenas.

A controversial incident on Wednesday led to Golden State Warriors' Chris Paul being ejected from his team's game with the Phoenix Suns, thrown out by referee Scott Foster, with whom Paul has endured a long feud.

Paul and Foster have clashed numerous times over the years, and the latest disagreement saw the referee slap the 12-time NBA All-Star with two quick technical fouls, leading to the 38-year-old's seventh career ejection.

Arenas, who racked up 11,402 points in an NBA career spanning 11 years, believes referees must do more to control their own emotions amid the chaos.

"Someone should ask Adam Silver [NBA commissioner] this," Arenas said on his Gil's Arena podcast. "If I'm a player, I'm playing a game that's emotional, I'm acting in real time, real deep human emotions.

"And when I don't control my emotions, a ref can give me a technical, which means whatever I said to him, irritated him so bad that he didn't control his emotions and he gave me a tech. So, my emotions led to him being emotional, but he gets to give me a technical and that's fine.

"How? He's supposed to be the most cool and collected m*********** out there. There's no nothing for him. He doesn't leave it with a win or loss. Whatever he does, whatever he makes, he gets it no matter f****** what. What's a ref's record? zero and f****** zero his whole career. There's no win or loss, [yet] that's the most f****** emotional dude in the game."