Chelsea are continuing to make progress in their pursuit of RB Leipzig forward Christopher Nkunku and 90min understands the Blues are hopeful of confirming his signing before the World Cup kicks off next month.

90min confirmed in September that Nkunku underwent a medical with Chelsea officials during the summer with a view to a transfer in 2023, with Blues co-owner Todd Boehly already making a start on future transfer business.

Nkunku will have a £58m release clause in his contract next summer but Chelsea are reluctant to agree to pay that, given the whole fee must be paid upfront, and are instead hopeful of paying a little extra as part of a payment plan that will allow them to spread the cost out over multiple years.

With personal terms already agreed between Chelsea and Nkunku, sources have confirmed to 90min that there is an optimism that the Frenchman's transfer can be finalised before he heads off to Qatar for the 2022 World Cup next month.