Chip Kelly might give Ryan Mathews more playing time at running back if only the Eagles general manager hadn't signed DeMarco Murray to a contract worth $13 million more in guaranteed money.

Kelly might consider naming Mark Sanchez the starting quarterback if only the GM hadn't sent Nick Foles and a second-round draft pick to the Rams for the $13 million Sam Bradford.

Kelly might admit there isn't enough talent at wide receiver if only the GM hadn't drawn a hard line in the sand during negotiations with Jeremy Maclin and expected Jordan Matthews, Nelson Agholor, Josh Huff, Riley Cooper and Miles Austin to account for the lack of a No. 1 target.

Kelly might call out the GM for releasing guards Evan Mathis and Todd Herremans and replacing them with a collection of Allen Barbre, Andrew Gardner, Matt Tobin and Dennis Kelly if only the man behind the curtain wasn't also the Eagles' head coach.

Pay no attention to that GM behind the curtain!

It has become increasingly difficult to look at the 2015 Eagles, however, without pulling the curtain on the offseason decisions Kelly made in his first year as head of player personnel. And seven games in - as the Eagles head into the bye - are enough of a sample to evaluate the moves.

Kelly said Monday after the Eagles fell to 3-4 following a 27-16 loss to the Panthers that he wouldn't make any changes to personnel.

"I told our guys after the game I think we are a good football team," Kelly said. "We just need to clean things up."

While the "good football team" part is debatable, there is talent on the roster. But Kelly isn't maximizing it, in particular at running back, where Mathews has proved to be a better option than Murray.

Kelly continues to harp on execution and fundamentals when addressing the problems with his squad, but those are coaching principals. His offense can be quibbled with, but the turnaround of the running game and the consistency with which receivers get open prove that he remains a very good play caller.

But has becoming a GM created a blind spot when it comes to evaluating his roster? He signed Murray to a contract that guarantees his full salary through 2016 and one that is $4.3 million more per year than Mathews receives. Does that change how he utilizes his running backs?

"No," Kelly said, "not at all."

While the draft has been a mixed bag, it is far too early to draw conclusions about a class that will rest primarily on the futures of Agholor, cornerback Eric Rowe and linebacker Jordan Hicks. But free agency and several trades that Kelly made are fair game.

Overall, Kelly's record isn't poor. But there have been more misses than hits thus far. Kelly can be excused for overpaying for Byron Maxwell - the Eagles needed to upgrade in the secondary - but did he have to make him the fifth-highest-paid cornerback in the NFL?

The same spendthrift ways apply to outside linebacker Brandon Graham ($6.5 million a year). He has been solid, but two sacks and three hurries are less than he had last season through seven games when he was playing about two-thirds of the snaps.

This isn't revisionist history. It was noted at the time that the Eagles paid significantly more than other teams had been offering for Maxwell and Graham. Walter Thurmond was a bargain basement find, however, and has been a success story after moving from corner to safety.

The LeSean McCoy-Kiko Alonso trade can be called a push for now. McCoy is averaging just 3.9 yards a carry and has only one touchdown for the Bills. He also missed two games with a hamstring injury. Alonso had a tremendous interception in the opener and has done squat since he injured his knee.

Kelly did exorcise McCoy's $12 million salary from the salary cap, but his investment of that capital remains questionable. He gets credit for signing Mathews, but the Murray addition always seemed like a panicky move following Frank Gore's reversal and Maclin's departure.

Mathews, meanwhile, is tops in the NFL in yards per carry (6.1) and has 35 more yards and as many touchdowns (three) as Murray despite 32 fewer carries.

At receiver, the Eagles have nearly undergone a complete overhaul since Kelly become coach. Maclin, DeSean Jackson and Jason Avant are gone and only Cooper remains among those who predated Kelly's arrival.

The group lacks a receiver who can consistently get open downfield and on the outside and one that can make immeasurable clutch catches. Dropped passes have been a season-long disaster. Matthews has a team-high six.

"I don't think it's talent," Kelly said, clearly with his GM cap on. "I just think it's sometimes a concentration issue with some of those guys."

But it hasn't just been the receivers. In all, a league-worst 25 of Bradford's 274 attempts have been dropped. It should be noted that Patriots quarterback Tom Brady has had a similar percentage of drops. They're a part of the game.

While the suggestion here isn't that Kelly should go with Sanchez, Bradford hasn't been great by any means. He hasn't once lifted the offense above its mediocrity. The argument that Sanchez would at least be as good is a valid one.

Kelly's decision to run a screen pass to Huff on third and 9 in the fourth quarter Sunday not only indicated a distrust in his receivers to make a downfield catch, but also in the quarterback to make a pivotal throw.

"I think our quarterback is playing well," Kelly said. "I have been pleased with Sam, very pleased with Sam."

What else would you expect a coach who is also the GM to say?

jmclane@phillynews.com

@Jeff_McLane