Coley long serving manager
 

just been on Sky Sports

longest serving managers in the League are;

Dario Gradi (moving upstairs end of this season)
then
Alex Ferguson (will go if they blow it this year I reckon)
then
Graham Turner (Hereford (chairman/manager?) doesn't count not even in this country)
then ArseN Wenger (threw his toys out of the pram and will not be renewing his contract)
then Coley!

Longer than Sam Allardyce and he seems to have been at Bolton forever.