Walster is a 24-year-old left-back who joined Southern League Premier Division South outfit Chesham United in the summer after four seasons at Hitchin Town.
He made over 150 appearances in his time with the Canaries and scored 11 goals.
He was originally in the youth team at MK Dons.
Bell is a young centre-forward who joins the Waders from high-flying league rivals Royston Town.
He has played 8 games and scored once for the Crows this season after joining in the summer following his release by SkyBet League One side MK Dons. |