mark Warburton set to retire at the end of the season . despite initially being unavailable for transfer , along with other foreign bosses . Zola was at derby Park to watch Brentford play on Saturday .
Mark Warburton set to leave at the end of the season . Gianfranco Zola being considered for job , along with other foreign bosses . Zola was at Griffin Park to watch Brentford play on Saturday .