UEFA defines the List A transfer balance as the difference between cost savings from outgoing players and the new costs from incoming players at the applicable deadline for submitting the List A squad.

Both clubs were found to have breached the European governing body's football earning rules and squad cost rules.

Chelsea have been fined 31 million euros ($36.50 million) by UEFA for breaches of its financial rules, while Aston Villa, Barcelona and Olympique Lyonnais were also levied with large fines, UEFA announced on Friday.