PHILADELPHIA - The Eagles will need to cut 22 players after Thursday's preseason finale at the New York Jets.
Teams are required to reduce the roster from 75 players to the regular-season limit of 53 by 6 p.m. Saturday.
"There's a lot up in the air right now," Kelly said Tuesday. "Obviously, the games are different than the training sessions out here, so (Thursday's game) is the last real good shot of us getting an opportunity to see how they react in that environment. It's as close to a regular season as you can get, so it's a huge night for all of those guys."
When it comes time to make the decisions, Kelly will have final say, though general manager Howie Roseman and the assistant coaches will also have input.
"It's not a problem because we're on the same page in everything," Kelly said. "There has not been a decision that's been made personnel-wise where I've felt one way and (Roseman) felt the other way.
"It helps when you have guys that are professional and can see (both sides) and understand how it fits in the grand scheme of things. I think he sees the big picture and I see the big picture, so I think that's why we get along so well."
When it comes to filling in the roster, Kelly said a players' versatility will have a big role in determining his value.
That should help guys like tight end/wide receiver Clay Harbor, linebacker Brandon Graham and several offensive linemen.
Harbor was initially viewed as a long shot to survive the cuts, considering he entered training camp as the fourth tight end behind James Casey, Brent Celek and rookie Zach Ertz. But the fourth-year veteran has also been taking reps at wide receiver in the last two weeks while also excelling on special teams. He will play tight end for the first half against the Jets, then move to receiver for the second half.
"It's a very strange situation," Harbor said. "I feel like I'm a better tight end than I've ever been and I've definitely had my best camp since I've been here. But yet I'm lower on the depth chart than in the past.
"It's probably still a coin flip (whether or not he makes the team). I still have no idea if I'll be here or somewhere else this season. Or if I'll be a tight end or wide receiver. All I can do is keep playing hard and do whatever they ask me to do."
EXTRA POINTS: Offensive lineman Dennis Kelly, who had back surgery earlier this month, said Tuesday he's scheduled to visit with doctors on Sept. 16 in hopes of getting clearance to play. As a result, he will miss at least the first two games against Washington (Sept. 9) and San Diego (Sept. 15), respectively.