After starting his footballing career at Grantham Town, Lenell made the move to Lincoln City in 2006, where he was awarded a scholarship.
After seventy appearances for Lincoln, Lenell joined Bury after impressing manager Alan Knill and helped them win promotion to League One.
After departing Bury, Lenell made the switch to Grimsby Town and where he found the net sixteen times during the 2014/15 campaign.
Lenell joined the Exiles last summer and made over twenty-five appearances. Lenell made his return to the squad ahead of schedule at the end of last season, after returning early from an injury that was due to see him sidelined until the start of the 2016/17 season.