Former Poppies Manager.....

 .....of, ahem, limited renown or inexplicably popular former Genesis drummer?  You decide.

On the subject of Gary Johnson's time at the Poppies, the Wikipedia article covering his time here seems to gloss somewhat over the quality of his tenure.  A more suspicious blogger might suggest Lee had a hand in writing this himself?

Wikipedia - 

Kettering Town[edit]

After leaving Cambridge, Johnson took over as manager of Kettering Town as the club introduced full-time football for the first time in the club's history. However, once the decision was made to revert to being a part-time club, Johnson moved to Watford as director of their youth academy by request of former England manager Graham Taylor.