Spread betting is City 1st goal 56-58 minutes. So if you 'buy' on 58 for £1 you win £1 every minute over 58 we don't score = £32 if we don't score. If we score before 58 mins you lose every minute between goal time and 58.
If you 'sell' on 56 (means you think we score before 56 mins, and we don't score you lose £34 (diff between 56 and 90 mins)