Seth Johnson signed for Derby County, from Crewe in 1999, for £3million and the deal also saw us gain 15% from any sell on fee Derby were to get for Seth. Johnson went to Leeds United for £7million in 2001 and that fee rises on appearences.
This week Johnson played his 30th Leeds game and saw Leeds hand over £250,000 to Derby. Because of the 15% sell on clause, we get £37,500 from it.