Financially troubled Derby County have sold teenage defender Dylan Williams to Chelsea - the fourth player the Rams have moved on in this transfer window.
Williams, 18, joins the Champions League holders for an undisclosed fee.
After making his debut aged 17 in last season's FA Cup third-round loss to non-league Chorley, Williams has made nine Rams first-team appearances.
Williams is expected to figure in Chelsea's development sides in the short term.
Up-for-sale Derby sit second bottom of the Championship, eight points from safety, following Saturday's derby defeat by Nottingham Forest.
Placed in administration in September by former owner Mel Morris and deducted 21 points, Derby have so far battled hard against relegation to League One under manager Wayne Rooney.
But their main fight this season is to keep afloat - and avoid the growing threat of liquidation if they cannot conclude a deal to buy the club.
The wealthy US-based Binnie family, founders of investment company Carlisle Capital, submitted a bid of about £28m to buy the club on Friday.
But Derby's overall debts are reported to be more than double that - and that includes compensation claims from fellow English Football League clubs Middlesbrough and Wycombe Wanderers.
The club's administrators Quantuma had hoped to name a preferred bidder earlier this month, but they have until 1 February to meet the EFL's statutory requirement for proof of how Derby will be funded for the rest of the season.
And they will meet with the EFL on Tuesday amid what are being described as "positive developments".
On top of the bid by the Binnie family, BBC Sport understands that former chairman Andy Appleby is also working on an alternative bid that also includes Derby's Pride Park stadium, which is owned by former owner Mel Morris.
An EFL spokesperson said: "Following positive developments over the course of the weekend, a proposed meeting involving the EFL and political stakeholders to discuss the ongoing challenges at Derby County set for later today (Monday) has been postponed to allow for additional progress to be made by the administrators.
"It is now expected that the League and the administrators will sit down in the next 24 hours as we seek to resolve the outstanding issues to the satisfaction of all parties."