This one is kind of a toss-up considering the versatility Kelly has at wide receiver.
While the only proven commodities among the Eagles' wideouts are Jackson, Maclin and Jason Avant, there are quite a few wild cards that could impress or flop in training camp.
A few of those intriguing names are Russell Shepard, Damaris Johnson, Arrelious Benn and Ifeanyi Momah.
The players listed above are names worth remembering, because a few of them might turn out to be key pieces for Philadelphia's offense in 2013.
It's known that Johnson's creativity and escapability are respected by Maclin, and he'll likely get some significant playing time.
The Eagles, while they do have tight ends like Ertz to utilize in the red zone, would be better off with a reliable set of hands split out wide within 20 yards of the goal line.
Riley Cooper isn't the answer as he's not extremely tall (6'3''), and his hands aren't the most reliable.
That considered, Kelly would be smart to give Momah a shot at those duties. With more potential at a younger age than the 25-year-old Cooper, Momah (6'7'') has dealt with injuries.
But if staying healthy becomes a habit for Momah, he could have a bright future in Philadelphia—which could eventually render Cooper expendable.
That would leave the Eagles with five receivers (Jackson, Maclin, Avant, Johnson and Momah), which is the amount of receivers they went into 2012 with.
However, it wouldn't be surprising to see Kelly and the Eagles carry six receivers for flexibility sake.
With that potential situation, it would come down to Shepard or Benn—the latter has NFL experience under his belt.
Benn was an all-purpose threat in his time at Illinois—catching 30 balls for 440 yards and three scores in 2011—despite limited action last year.
Shepard showed his weaknesses at LSU (weak route-running), and even though he's electric with the ball in his hands, that defect alone could keep him off the final roster and on the practice squad.
But should an injury occur to one of the Eagles' rostered receivers, expect Shepard to step in and make some sort of an impact.