Manager Mike Ford confirmed that the veteran striker would be leaving the Puritans.
Thirt-eight-year-old Louis is a former Football League player with Oxford United, Bristol Rovers and Mansfield Town.
He joined Banbury in the summer of 2017 and has made twenty-seven appearances scoring 17 goals.
It is expected that all the paperwork will be completed in time for Louis to play for Chesham on Saturday.
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