West Ham United, Chelsea, Sunderland, Bradford City, Gillingham, Lincoln City, Concord Rangers.
'Knotty' signed for Chelmsford City in March 2019.
The talented central midfielder joined the Clarets after departing Essex side Concord Rangers.
Billy started his youth career with West Ham United and also featured for the youth systems of Chelsea and Sunderland. He went on to make 1 appearance in the Premier League with Sunderland, coming on as a substitute against Tottenham Hotspur in 2013.
Whilst with Sunderland, the midfielder went on loan 4 times to AFC Wimbledon, Woking, Wycombe Wanderers and Port Vale.
After leaving Sunderland, Knott signed for Bradford City for two years before also plying his trade with Gillingham, Lincoln City and Rochdale.
At the beginning of the 2018/19 campaign, Knott signed for home-town Club, Concord Rangers and was appointed captain.