St Mirren sign former Derby County striker Callum Ball on a one-year deal, with the option of a further year.
Derby County's academy earns category one status, the highest level under the Elite Player Performance Plan.
Derby County summer signing George Thorne is ruled out for up to nine months with a cruciate knee ligament injury.
Teenage defender Josh Lelan joins Swindon Town on a month-long youth loan from Championship side Derby.
Midfielder James Bailey joins Barnsley on a free transfer from Derby County on a two-year contract.
Championship side Derby County complete the signing of West Brom midfielder George Thorne for an undisclosed fee.
Derby County head coach Steve McClaren signs Spanish youth international midfielder Ivan Calero from Atletico Madrid.
Derby County sign Coventry City defender Cyrus Christie on a three-year contract for an undisclosed fee.
Derby County manager Steve McClaren admits he thought Craig Bryson would leave the club rather than sign a new deal.
Midfielder Craig Bryson signs a new five-year deal with Championship side Derby County.
Teenage midfielder Will Hughes signs a new four-year deal with Championship club Derby County.
Brazilian teenager Alefe Santos joins Derby County after leaving Bristol Rovers, despite interest from Premier League Hull.
Derby County defender Jake Buxton signs a new three-year deal with the Championship club.
Zak Whitbread joins Derby County on a free transfer while fellow defender Lee Naylor re-signs for the club.
Derby County left-back Craig Forsyth agrees a new four-year deal which keeps him at the Championship club until 2018.
Derby County midfielder Jeff Hendrick signs a new four-year deal with the Championship club.
Derby County reject a bid, thought to be £750,000, from Premier League newcomers Burnley for midfielder Craig Bryson.
Leyton Orient sign Adam Legzdins from Derby County on a free transfer, as the goalkeeper signs a two-year deal.
Derby County coach Paul Simpson says the club will do everything they can to keep their young players like Will Hughes.
West Bromwich Albion reject a bid from Derby County for midfielder George Thorne, thought to be in the region of £1m.
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