Jose Mourinho blamed Chelsea's surprise 2-1 home defeat by Basel 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.

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.

However, they were pegged back by a Swiss side which grew in confidence the longer the game went on as Mohamed Salah equalized and, as Chelsea froze, Marco Streller headed the winner nine minutes from time.