Guus Hiddink is urging Chelsea to keep hold of Brazil midfielder Willian despite a big money offer from China.
The 27-year-old has been a beacon of consistency in a season of struggle for the Blues.
And Chinese Super League side Guangzhou Evergrande have made a huge bid - worth £50million - for the former Shakhtar Donetsk player.
But Hiddink has warned the club against selling their prized asset.
He said: “Well I know Willian for many years, first of all as a person he is very down to earth and a very nice person - but that is not interesting.
“On top of that, he is doing a very good job in a difficult year. With his natural ability, he is still working very hard and sacrificing himself.
“He has the attitude to do so.”
Watch: Guus Hiddink speaks ahead of the Spurs game
Willian has been in fine form this season, becoming Hiddink's main go-to man as the Blues recovered from a horror start under Jose Mourinho which saw them lingering just a point above the relegation zone.
He has scored 11 goals in all competitions for Chelsea this season , with six assists to help atone for Eden Hazard's woeful form.
But he could be tempted by the move to China - where former Blues midfielder, and compatriot, Ramires arrived in the winter transfer window.
High profile players such as Jackson Martinez and Paulinho departed for China's top flight in what became a prolific splurge.
But the Blues may feel comforted by the fact that Willian still has two years left on his five year deal which was signed on arrival in 2013.