Nelson Agholor hits the cap at $9.3 million if he returns this year. He can be waived without a penalty, but you’d need to go out and pay money to a slot receiver to replace him, so your net in total $$$ isn’t as big as it seems.
You need room for a long-term Carson Wentz contract.
The Eagles need a running back more than a receiver.
There wouldn’t be enough targets go around for Brown, Jeffery, Zach Ertz, and/or Agholor if he returns.