49ers Patrick Willis retiring after injury-shortened season – The
Four-time All-Pro NaVorro Bowman retires as a 49er, one-day
49ers All-Pro NaVorro Bowman officially retires
49ers re-sign NaVorro Bowman for retirement purposes – Daily Democrat
49ers star Willis set to retire
49ers: 5 former players who could come out of retirement to play
Penn State great NaVorro Bowman has retired, the San Francisco
Grant Cohn: For all his greatness, NaVorro Bowman's time is done
Texas Football: Luke Kuechly's retirement signals a bigger trend
Fangirl Take: NaVorro Bowman Retires with 49ers in Santa Clara
Four-time All Pro NaVorro Bowman retires with 49ers after