Eagles make roster moves, release CB Greedy Williams and punter Ty Zentner

Eagles signed 5 defensive players, including CBs Tyreek Maddox-Williams and Marvin Wilson.
Eagles released CB Greedy Williams and punter Ty Zentner.
Punter Arryn Siposs expected to start in Week 1.
CBs Zech McPhearson, Tyrie Cleveland and DT Noah Elliss waived with injury designations.
Moves come as Eagles finalize 53-man roster before season opener.