Piet de Visser is driving Chelsea's pursuit of Santos star Neymar.
De Visser acts as an advisor to Blues owner Roman Abramovich and is famous for his Brazilian contacts.
The Independent says De Visser is recommending they continue to chase Neymar, the brilliant 19-year-old striker with Santos who turned down their overtures last summer and is likely to start for Brazil in Sunday's friendly against Scotland at Arsenal's Emirates Stadium.
De Visser was also behind the club's signing of Alex, via an acclimatising spell at PSV Eindhoven, and gave the OK to the recent moves for Ramires and David Luiz.
