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The Eagles have moved quickly to sign up their young players for the foreseeable future, and they may be nearing the biggest one yet this offseason.

According to Eliot Shorr-Parks of NJ.com, the Eagles are negotiating a massive deal with defensive tackle Fletcher Cox which could feature more than $50 million in guarantees.

The report says the deal is “close,” and given the pace at which they’ve been passing out money to Lane Johnson, Zach Ertz and Vinny Curry, it’s reasonable that they’re trying to get as much done as quickly as they can. Cox had a year left on his rookie deal, after they picked up his option for 2016.

Cox had 9.5 sacks as a 3-4 defensive end last year, and will slide inside as they convert to a 4-3 defense next season, but he’s versatile enough to play a number of roles.

Of course, until one of those roles is quarterback, the Eagles still have a pretty big item on their offseason to-do list.