Derby have completed the season-long loan signing of defender Matt Clarke from Brighton.
Clarke joined Brighton from Portsmouth on a four-year deal earlier this summer for an initial £3.5m, becoming Graham Potter's first signing as Seagulls manager.
But Potter is allowing the 22-year-old centre-back to continue his development in the Championship.
Derby boss Phillip Cocu was keen to add a ball-playing central defender to his ranks ahead of the new season.
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It's Transfer Deadline Day for the Premier League and Championship on Thursday August 8 and Sky Sports will be bringing you all the latest news on who your club is signing.
Start your day with Deadline Day Breakfast (6am) ahead of a special Good Morning Transfers show (9am), with Deadline Day - The Countdown (4pm) taking you to the 5pm deadline. The Transfer Show - Deadline Day at 6pm will analyse the big moves before Deadline Day at Ten rounds up all the transfer headlines.
As well as tuning into Sky Sports News, don't miss a thing with our dedicated Transfer Centre blog.