It's not even training camp but one Eagles rookie is already on thin ice

Philadelphia Eagles, Nick Sirianni | Sam Hodde/GettyImagesEven before the Philadelphia Eagles open up their training camp, fans have enjoyed chatting over which position groups are going to see some of the more intriguing battles.

Although Philly's wide receiver room is extremely top-heavy, the bottom half of the depth chart could be anyone's game. Between a couple of recent draft picks and a couple of free agent signings, the final one or two spots might be up for grabs. However, one name might have an extraordinarily hard time working his way into that position: undrafted free agent Giles Jackson.

Now, this might seem like a logical choice for somebody who doesn't necessarily have a shot to…