The Cobblers’ head of sports science, Craig Smith, has left the club with immediate effect.
Smith was brought to Sixfields by Aidy Boothroyd in April 2012 following a spell working with the development squad at West Ham United.
Prior to that, Smith was an analyst at Charlton Athletic but is now seeking pastures new.
“I have been here around a year now and it has given me a chance to assess things,” said manager Chris Wilder.
“Craig has left and he moves on with our thanks for his hard work and our best wishes for the future.”