Coughlin could be in trouble with NFLPA

The NFL Players Association is investigating complaints about New York Giants coach Tom Coughlin’s offseason training program.

Published reports Friday said seven to 10 players complained. NFLPA executive director Gene Upshaw did not return two telephone calls left at his office by the Associated Press.

Speaking in East Rutherford, N.J., after a morning workout at his first mini-camp as Giants coach, Coughlin said he was aware of the complaints but unable to elaborate.

“I don’t know what the complaint is, so on and so forth,” said Coughlin, a disciplinarian hired in January to turn around an underachieving team that went 4-12 last season. “We have done everything the union has asked and forwarded all the information.

“Until I hear more, I don’t have anything else to say.”

Peterson skips 49ers mini-camp

Pro Bowl linebacker Julian Peterson was a no-show at the opening session of the San Francisco 49ers’ first spring minicamp.

Peterson is scheduled to become an unrestricted free agent this year after enjoying his best pro season in 2003. The 49ers designated him as their exclusive franchise player in February after contract negotiations broke down.

He has not signed his tendered franchise offer, and NFL rules stipulate that negotiations with franchise players cannot resume until July 15.