Nets’ Kirilenko out with back issues

Andrei Kirilenko, after missing most of the preseason and 25 of the first 29 games last season with back spasms, sat out Sunday morning’s practice — the team’s second of the season — because of a tight lower back.

“Well, [it’s] not a big concern, but I guess it’s unavoidable,” Kirilenko said after the practice. “Like once, twice a year it kind of [flares] up a little bit. It’s a little bit tight, but no major soreness like I had last year, so I don’t know.

“It could be seven days to I don’t know how much.”