Leyton Orient duo Harry Lee and Sandro Semedo have signed new contracts with the League Two club.
Midfielder Lee, 20, has put pen to paper on a one-year deal after making seven senior appearances for the O's.
Meanwhile, 18-year-old winger Semedo has penned a two-year contract after impressing in the youth team.
Orient start the new season at home to Barnet on August 8.