Fletcher Cox began his NFL career playing in a 4-3 defense. It's clear the Philadelphia Eagles' star defensive lineman wouldn't mind a return to the scheme:
Did somebody say 4-3 .... Or am I dreaming— fletcher cox (@fcoxx_91) January 18, 2016
The Eagles haven't hired and/or announced a new defensive coordinator yet, but maybe Cox knows something here. It's already been reported that there's a "good chance" the Eagles could switch back to a 4-3 in 2016 and beyond.
Philadelphia always played the 4-3 defense during the Andy Reid era. Then things changed when Chip Kelly was hired and he brought a two-gap 3-4 scheme to the Eagles. Now Doug Pederson has the opportunity to bring the 4-3 back.
Cox played very well as a 3-4 defensive end, even if the numbers didn't always show it. If the Eagles employ a 4-3 once again, Cox will go back to being a defensive tackle.
The Eagles have reportedly had preliminary talks with Cox about a long-term contract extension.
UPDATE: Vinny Curry weighs in.