Birmingham City are furious over West Ham United's attempts to tempt their front office staff away.
The Mirror says Hammers' vice-president Karren Brady has infuriated City by returning to St Andrews to recruit her former PA Aedin Hennigan.
City also fear West Ham may move for their chief executive Michael Dunford as Brady wants to appoint a new CEO at Upton Park.
Fuming Carsen Yeung and Birmingham chief Peter Pannu did not attend last week's game at Upton Park against the Hammers.