Herrera has played a vital part in the reserves' and FA youth Cup winning team's success this season as he was the man who discovered Jack Hobbs, Godwin Antwi, Miki Roque and Paul Anderson amongst others.
After last night's game fellow reserve team coach Hugh McAuley paid tribute to the work of Herrera.
"Paco is an excellent coach and is a really good man who I have enjoyed working with very much. I will be very sorry to see him go." he said.