Chelsea manager Jose Mourinho was reportedly involved in a furious row with West Bromwich Albion defender Jonas Olsson following last weekend's 2-2 draw at Stamford Bridge.
Mourinho clashed with Olsson as the pair left the pitch after a controversial end to Saturday's match in West London, which saw Eden Hazard convert a stoppage-time penalty awarded after Ramires went down under pressure from Steven Reid.
Olsson was branded a "mickey mouse player" as the pair shared a heated exchange over the penalty decision, with the Swedish defender telling Mourinho to "fuck off" in reply, according to the Daily Mail.
Both men eventually settled their differences but not before sparking a bust-up in the tunnel involving up to 20 players across the two teams, a dispute that was eventually separated by stewards and backroom staff.
Mourinho was adamant at full-time that Ramires was clearly fouled inside the box, while Baggies boss Clarke declared himself "flabbergasted" with the referee's decision.