Date of birth
Harry Lennon signed for Southend on a three-year deal from Charlton Athletic for a nominal fee in 2018.
The 23-year-old, who graduated from the Addicks youth system, made six starts and 12 appearances in total for Charlton in his final season.
The defender has tasted League One football on two separate loan spells which took place at Gillingham, firstly at the end of 2014 and then again in 2015 when he made eight appearances.
He was recalled to South London and played 19 times in the Championship, scoring in draws against Bristol City and Blackburn Rovers.
The defender previously played under Chris Powell when he was at Charlton and the Blues manager was the man to get his career underway after gifting him his debut back in January 2014.