Tottenham's 10 biggest transfers (according to transfermarkt.com):
1). Moussa Sissokho - Newcastle United - £30 million (Dh143m): Flop
2). Roberto Soldado - Valencia - £25m: Flop
3). Erik Lamela - Roma - £25m: Jury still out
4). Son Heung-min - Bayer Leverkusen - £25m: Success
5). Darren Bent - Charlton Athletic - £21m: Flop
6). Vincent Janssen - AZ Alkmaar - £18m: Flop
7). David Bentley - Blackburn Rovers - £18m: Flop
8). Luka Modric - Dynamo Zagreb - £17m: Success
9). Paulinho - Corinthians - £16m: Flop
10). Mousa Dembele - Fulham - £16m: Success