The air will be blue in the Celta Vigo dressing room before Thursday night's game – Celta Vigo blue as they face their first ever European semi-final; Man City blue as striker John Guidetti recalls his time at the Etihad; and blue with Iago Aspas practising the English swear words he picked up during his brief time at Liverpool.
The Spain striker was asked in an interview earlier this year if it was true that 'yes' was the only word he managed to master on Merseyside. 'Not so,' he told Spanish radio station Cadena Ser. 'I also learned: f*** off and s***.