The Fulham star is moving across London to join up with Tottenham.
Spurs made a bid on Tuesday to trigger a release clause in Dembele’s contract and the midfielder has now agreed personal terms and passed a two-part medical.
Tottenham announced the transfer on its official Twitter account, with Dembele considered by manager Andre Villas-Boas as a replacement for Luka Modric, who signed for Real Madrid in Monday in a 33.2m pound deal.
Dembele cost Fulham 5m pounds when he signed from AZ Alkmaar in 2010 and caught the eye of leading clubs across Europe after converting to a central midfield role during last season.
Fulham had announced on Tuesday night that Dembele was heading to White Hart Lane after he was left out of the Cottagers' 1-0 League Cup defeat to Sheffield Wednesday on Tuesday night.
Dembele revealed over the weekend that he wanted to “go to the top”, having caught the eye with a man-of-the-match performance against Manchester United on Saturday.
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