Entering his fourth NFL season, Morgan Burnett’s goal isn’t to replace Charles Woodson or Nick Collins in the Green Bay Packers’ secondary.

After leading the team with 123 tackles last season, the only player Burnett is striving to be is an improved version of the 6-foot-1, 209-pound safety he was last season.

Another year older, another year wiser.

“I’m not Charles Woodson,” said Burnett at Tuesday’s organized team activities. “Charles Woodson was a Hall of Fame player and I’m very thankful to have had the opportunity to play alongside him, but right now, I have to come in and try to be the best Morgan I can be.”

The Packers are banking on it, too. Since jettisoning Woodson in February, the team has yet to add another body to the safety room with the 24-year-old Burnett serving as the longest tenured veteran of the group.

Last month, the team shunned a safety-rich draft class in favor of youngsters M.D. Jennings and Jerron McMillian while crossing their fingers on Sean Richardson, a lengthy, undrafted prospect who underwent surgery for a cervical disc herniation after the 2012 season.

Shortly after the draft, the Packers reached an agreement with Illinois State undrafted safety Ben Erickson, but the Greendale native failed his physical upon arriving for the rookie orientation camp and wasn’t retained.

The Packers brought in two safeties to the rookie camp for tryouts — Stony Brook’s Cedrick Moore and Sacramento State’s Ryan McMahon — but passed on both.

Things could change as the team still has two available spots on its 90-man roster, but as of now the Packers are standing pat with their four safeties and Penn State alumnus Chaz Powell, who spent the final month of the season on the team’s practice squad.

“It’s going to be very competitive,” said Packers coach Mike McCarthy. “Morgan has clearly established himself as the leader back there. His communication has been outstanding. I already have spoken on it. We’ve had the opportunity to install all of our defense and I look for our guys to take leadership roles as far as communicating back there.”