The Detroit Lions are receiving calls from several teams inquiring about the availability of Ndamukong Suh, whose status with his current team is being questioned after not attending workouts earlier this month.

NFL insider Mike Freeman revealed that several teams are contacting Detroit about their interest in trading Suh, but he quickly added that the Lions are not interested in trading the defensive tackle.

"I continue to hear teams are contacting the Lions about possibly trading Suh," Freeman posted on his Twitter account.

"Not saying Suh will be traded. But teams are interested. Despite the Lions saying there is no interest," he said in another post.

Trade rumors involving Suh started to swirl when the 27-year-old DT's contract talks with the Lions were stalled, and further intensified when he did not appear during the first two phases of their training program, including the team's first voluntary minicamp.

But all speculations about his willingness to play for the Lions this season ended when the five-year veteran attended the team's first organized team activity on Tuesday.

New Lions head coach Jim Caldwell did not criticize Suh for failing to attend the first six weeks of workouts, and defended him instead, saying that the former Nebraska standout did not violate any rule.

"I don't understand why that would even come up as an issue," Caldwell told the Detroit Free Press. "He didn't do anything wrong, he didn't break any rules. It's all voluntary. I don't think it makes much sense."

Defensive tackle C.J. Mosley also came into Suh's defense, praising the three-time Pro Bowl defensive tackle's work ethic and leadership skills.

"We're talking about Suh here, and in all my years there's never been a guy who's been more professional about his job," Mosley said. "That's the last person you need to worry about."

Former Lions great Al Baker was also impressed with what he saw during Tuesday's OTA, saying that Suh showed a lot of intensity during the workout.

Baker told USA Today that the trade rumors surrounding Suh will only make him more determined to prove his worth in the next NFL season.

"Guys like Suh, they play for the love of just -- it's the only place where you can kick the hell out of somebody, and you won't go to jail. It is. It really is. So all that stuff, and certainly this late in the game, it hurts. That self-applied pressure, I saw it on his face today. It's good," Baker said.