Chelsea blame a technology glitch for the breakdown of Hakim Ziyechâs deadline-day loan move to Paris St-Germain that upset both the player and the French club.
The club have handed new signings long-term contracts to spread costs but Uefa have swiftly closed the loophole
The new owners have spent more than ÂŁ500m on 16 signings but need to win games while building long-term strategy