GREEN BAY, Wis. -- The Green Bay Packers signed Julius Peppers and Letroy Guion in free agency to bolster their defensive line, not necessarily to replace certain players.

That was the takeaway from comments coach Mike McCarthy made at the NFL annual meetings this week when asked about the possibility that free-agent defensive linemen Johnny Jolly and Ryan Pickett could return to Green Bay.

Both remain on the open market.

However, their situations are different.

Jolly's is mostly a medical one. He had neck surgery in January to repair a bulging disc that bothered him late last season. Doctors fused together his C-5 and C-6 vertebrae using bone from his hip. He recently was cleared to resume normal offseason workouts.

McCarthy said the Packers remain interested in bringing back the 31-year-old, who returned to football last season after sitting out for three years while serving a suspension for violating the NFL’s substance abuse policy and also spending time in prison.

"Yeah, if it definitely works out, I mean we're monitoring that," McCarthy said. "I think Johnny did a nice job last year. You have to be very pleased for where he started and where he finished. I think he gave us every inch of what he had and then some. I was very pleased with Johnny's contribution last year."

Jolly played last season for the veteran’s minimum of $715,000.

Pickett, 34, made $6.2 million in base salary and bonuses last season in the final year of a four-year, $24.925 million deal. Although he played in all 16 games for the second straight season and missed only four games during his most recent contract, his production dropped off last season, when he recorded only 19 tackles, his fewest since his rookie season of 2001.

"We'll watch what's going on with Ryan," McCarthy said.

There might not be room on the roster for both Jolly and Pickett. Even though McCarthy said Peppers will work mostly with the linebackers, he still has a deep defensive line group. The Packers return Josh Boyd, Mike Daniels, Datone Jones and Jerel Worthy -- all four of which are still on their rookie contracts. They also plan to return Mike Neal back to the defensive line, at least on a part-time basis, after playing almost exclusively at outside linebacker last season. Nick Perry and Peppers also could split time between the two spots in what McCarthy calls the elephant position.

The Packers also re-signed nose tackle B.J. Raji and brought in Guion, who played for the Minnesota Vikings.

"Let's not forget about Letroy," McCarthy said. "I thought he was an excellent acquisition that we haven't even brought up. I thought he's played very well the last three times we played the Vikings. So he's been an excellent addition to our defensive front."