Andrew Bynum has been mistreated by Philadelphia fans, 76ers swingman Evan Turner said before chants of “Bynum sucks” and “Let’s go bowling” rained from the stands leading up to the Sixers’ tipoff against the Cleveland Cavaliers on Friday night at the Wells Fargo Center.

The Sixers leveraged the future of the franchise to acquire Bynum from the Los Angeles Lakers in a four-team trade in August 2012, but the 7-foot, 285-pound center never played for Philadelphia because of bone bruises and damaged cartilage in his knees. Bynum, 26, was allowed to leave in free agency over the summer and signed a two-year, $24 million deal with the Cavaliers. Only $6 million guaranteed. The Sixers paid him $16.9 million last season.

“You definitely feel for him. You can’t help it,” said Turner, who’s taken his own lumps from the Philadelphia faithful since being selected with the No. 2 overall pick in the 2010 NBA draft. “Obviously, he wants to play the game he loves (at his previous All-Star level), but right now it’s not possible. He’s a smart guy and a lot more can come from him, but you just feel bad for his bad luck a little bit, in a certain sense.

“And then how people react to him and stuff. It’s not like this guy wants to get hurt,” Turner said. “You know how hard it is to be hurt and then have to come back and do all that crazy (rehab)? That stuff’s not any fun. You’re always rehabbing.”

Bynum was booed relentlessly as he checked into the game with the Sixers trailing 20-12 with 3:38 left in the first quarter. The jeers continued every time he touched the ball. He managed no points and four rebounds in 9½ minutes in the first two quarters. Philadelphia led 44-42 at halftime.

On Thursday, Bynum said he considered retiring after last season and continues to seriously think about calling it quits. He still feels sharp pain in his surgically-repaired knees, despite arthroscopic surgery on both joints in March, and is a role player for the Cavs. He’s averaged 5.5 points and 3.5 rebounds in 12.8 minutes over four appearances prior to Friday’s game, a far cry from the 18.7 points and 11.8 rebounds he posted two seasons ago with the Lakers.