From England midfielders to the most expensive player in his nation's history, Forest will wish they'd kept hold of these talented youngsters.
The 23-year-old was strongly linked with a loan move to Villa Park during the summer but ultimately joined Burnley instead.
Chelsea have never been a side afraid to splash the cash when needed, or not needed. How have they done in the 2016 summer window?
Report suggests Chelsea striker Patrick Bamford has agreed to join Burnley on loan.
The Clarets are the latest side to be linked with Bamford, after Wigan Athletic and Aston Villa.
Wigan have reportedly made a move for the Chelsea striker, but Villa could still land him this summer.
Burnley are the bookies' new favourites to sign Chelsea's Patrick Bamford ahead of Aston Villa.
The former Championship Player of the Year would be a coup from the Lactics.
The Hoops are set for a busy month of transfer activity.
Wolverhampton Wanderers need more fire-power in attack if they are to challenge for promotion this season.