One of the keys next season will be keeping Jones on the field. The Packers were counting on him as a key member of the defensive-line rotation until an August late-ankle sprain set him back as a rookie.
McCarthy believes Jones is a "very talented young man" and "one of those second-year players who makes a huge jump."
Here's what else we learned from McCarthy on Friday:
» The coaching staff isn't actively trying to get smaller and lighter on the defensive line, but McCarthy did acknowledge the desire to increase athleticism and versatility up front. According to NFL Media Insider Ian Rapoport, the team is prepared to let wide-bodied B.J. Raji and Ryan Pickett walk in free agency.
» Eddie Lacy's primary focus in 2014 will be to "play all three downs throughout the whole game." With DuJuan Harris returning from injury, Johnathan Franklin developing and James Starks hopefully re-signing, McCarthy believes the running-back rotation can be as good as he's ever had in Green Bay.