Chelsea and Aston Villa have been fined by Uefa for breaching the European governing body's financial rules. The two clubs could be prevented from registering new players for Uefa competitions for the forthcoming season unless they have a positive transfer balance by the end of the summer transfer window.

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.

Chelsea has been fined 20 million euros ($23.6 million) for breaking financial monitoring rules and Barcelona ordered to pay 15 million euros ($17.7 million) by UEFA

Dortmund say contract details are still to be finalised, but BBC Sport has already reported Gittens agreed a seven-year deal with Chelsea in June. "The talks with Chelsea were challenging, but ultimately we are pleased that we can most likely realise our financial ambitions and then have planning security,

Chelsea have agreed a deal to sign English winger Jamie Gittens from Borussia Dortmund, the Bundesliga club said on Thursday.

Chelsea have agreed a deal to sign English winger Jamie Gittens from Borussia Dortmund, the Bundesliga club said on Thursday, with the 20-year-old set to sign a seven-year contract in a move reportedly worth 55 million pounds ($75.