Alex Mack

Browns center Alex Mack could end up with the Falcons.

(John Kuntz, cleveland.com)

CLEVELAND, Ohio -- The Atlanta Falcons are pursuing Browns center Alex Mack, and the Browns have expressed interest in his possible replacement, Jaguars center Stefen Wisniewski, league sources told cleveland.com.

Mack, who voided the final three years of his contract last week, would be reunited in Atlanta with former Browns offensive coordinator Kyle Shanahan, who coached him in 2014.

Several other teams are expected to express serious interest in Mack, 30, as well. The Browns want to re-sign him, but only at the right price. He stands to become the highest-paid center in the NFL and the first one to average $10 million a year. Bleachereport.com first reported the Falcons' interest in him.

With the three-time Pro Bowler set to leave, the Browns expressed interest Wisniewski, 26, who's not expected to return to Jacksonville. The Browns also have second-year pro Cam Erving, their 2015 No. 19 overall pick, set to take over at center, but the Browns need insurance in case he's not ready.

In Cleveland, Wisniewski would be reunited with coach Hue Jackson, who helped draft him in 2011 out of Penn State when he was head coach of the Raiders. Without a first-round pick that season, he was the Raiders' top selection, at No. 48 in the second round.

Wisniewski (6-3, 305) started four seasons for the Raiders, including his first 15 at left guard before moving to center. In 2014, he played with a torn labrum that required surgery after the season. The Raiders let him go and he signed a one-year deal with the Jaguars, who have no plans of bringing him back after he unleashed several bad snaps down the stretch.

Wisniewski sailed one over quarterback Blake Bortles' head that gave the Titans a touchdown in a 42-39 victory. He also had a bad snap in a loss to the Saints.

"It's something that's not acceptable," assistant head coach/offense and offensive line coach Doug Marrone told the Florida Times-Union.

Offensive coordinator Greg Olson agreed.

"We can go out there and watch our centers throughout an entire week of practice and not see a bad snap, and then they occur on game day,'' he said. "There's probably some anxiety issues involved."

Marrone still praised Wisniewski for holding down the fort at the demanding position.

"I think he's done a fine job," Marrone said. "He really came in and jelled well together [with the other players]. He's really helped us out. It's difficult to get through him when he is in pass protection."

Jackson admitted at the Cleveland Auto Show last week just how valuable Mack is to the team.

"You can put it up there with the quarterback when you have a guy like that who has played so well for so long," he said. "We understand the situation that he's in, and he has a right to do what he's doing right now."

The Browns are in jeopardy of losing not only Mack but right tackle Mitchell Schwartz as well. A source said he's drawn interest from the Bucs, Giants, Vikings and Falcons.

Schwartz stands to become the highest-paid right tackle in the NFL at about $8.5 million a year. If Schwartz leaves, Austin Pasztor will be a candidate to replace him. He started the final four games last season at left guard.

The Browns are also pursuing Bengals receiver Marvin Jones and have expressed some interest in Bengals cornerback Adam Jones, source tell cleveland.com.