Jose Mourinho blamed Chelsea's surprise 2-1 home defeat by Basle partly on his team's immaturity and said his young millionaires had better grow up soon or their only Champions League involvement this Christmas will come via their beloved X-boxes.
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The Londoners, fielding an attack-minded side but with only Frank Lampard offering real experience in midfield, barely threatened in the first half but scraped a 1-0 lead through Oscar.
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However, they were pegged back by a Swiss side who grew in confidence the longer the game went on as Mohamed Salah equalised and, as Chelsea froze, Marco Streller headed the winner nine minutes from time.
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"I think it's probably not a team with such a personality and maturity to face the difficult moments of a game," Mourinho told reporters.
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"Against Everton (in Saturday's 1-0 Premier League defeat) the team struggled to deal with the situation despite dominating and today was a bit the same.
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"They began by accepting the responsibility of playing but when the first negative moment arrived the team shakes a little bit.
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"Emotionally, this is not a mature team and when you are in a difficult position it was not enough."
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Mourinho gave a debut to £30 million signing Willian and a first start for 20-year-old Dutch midfielder Marco van Ginkel. Eden Hazard and Oscar were also on duty - talented players undoubtedly but young, slight and too often bullied out of a contest.
Fans are really on his case right now cause he's not making them happy @ all. 2 straight losses is nothing to write home about...