Frank Lampard has revealed why Chelsea signings Timo Werner and Hakim Ziyech are yet to join up with their new team-mates at Cobham.

Chelsea acted fast - and crucially, ahead of their rivals - to get deals for Werner and Ziyech over the line before the end of the disrupted 2019-20 campaign.

Werner bypassed the opportunity to help RB Leipzig try and win the Champions League in August, instead agreeing a move to Chelsea before the European Cup could restart.

Ziyech was always due to join up with his new team-mates this month after agreeing his move from Ajax in February. The Eredivisie was cancelled due to the coronavirus pandemic and Ajax's defeat to Getafe in the Europa League meant he had no reason to agree a short-term extension to his Ajax deal.

That meant the new recruits officially became Blues players on Wednesday, but Werner will not meet his new colleagues until later in July while Ziyech is waiting on an update to quarantine rules.

"We are waiting on quarantine news to make sure they can travel, move around and work as we'll need them to," said Lampard.

The Chelsea boss also confirmed Werner is now having an end-of-season break.