PHILADELPHIA (973espn.com) — Whether it's Jay Glazer fanning the flames on FOX or Chris Mortensen claiming Calvin Johnson is in play for the Eagles, trade rumors follow this organization for one reason: Howie Roseman.

If anyone is likely to make a splash at the NFL trade deadline on Tuesday it's the Eagles' executive vice president of football operations but coach Doug Pederson cautioned those who assume adding a piece is a necessity for a 7-1 team at the midway point.

"That may be a Howie question," Pederson admitted Monday when asked about a potential trade at the NovaCare Complex.

The coach-of-the-year candidate then pivoted and essentially lobbied for the 53 guys on his current roster.

"I like where we're at right now, the way guys are playing," Pederson said." [A trade] isn't out of the question, but at the same time, the guys in the locker room are guys we have a lot of confidence in."

Adding a piece in-season in the NFL isn't the same as other sports, particularly Major League Baseball and the NBA, where impactful players can often step into new surroundings and become instant contributors.

In football, scheme and culture can change drastically from city to city and players often go through a ramping up process when changing addresses.

The chemistry aspect of making a change is what concerned Pederson the most.

"That's why you have to be careful," the coach explained. "It has to be the right fit. It just can't be anybody. From my standpoint, you don't want to disrupt the chemistry that's going on in the dressing room right now. Those guys are playing with a lot of confidence. They're rallying around each other. It would have to be a pretty special fit to make it work."

Speculation surrounding the Eagles starts at the left tackle position, where names like Buffalo's Cordy Glenn, Houston's Duane Brown and San Francisco's Joe Staley have been bandied about, although the latter broke his orbital bone against the Eagles on Sunday.

At receiver Calvin Johnson seems like a longshot while the potential off-the-radar move would be a running back who is effective in pass protection.

MONDAY NOVACARE NOTES:

-Cornerback Patrick Robinson is in the concussion protocol but the team's slot cornerback was seen walking to his car by 973espn.com and seemed okay. Meanwhile, Pederson expects Ronald Darby to do a bit more in practice this week as he continues to creep closer to a return from the dislocated ankle he suffered in Week 1.

-There was again no change in Sidney Jones' status so don't expect the rookie corner at practice this week. Jones is eligible to come off the PUP list anytime and practice but the three-week clock on adding him to the active roster would then start.

-John McMullen covers the Eagles and the NFL for 973espn.com. You can reach him at jmcmullen44@gmail.com or on Twitter @JFMcMullen