RAFA Benitez has warned his Chelsea players against complacency as they target a place in the Europa League final.

The Blues take a slender 2-1 lead into tomorrow night's semi-final second-leg against Basel at Stamford Bridge.

And the interim boss has told his side the job is only half done.

Benitez said: “My concern is that we will think we are already in the final.

“Everyone has to realise it will be tough. They will come trying to score, it’s the only way for them to qualify.

“They will be offensive, they will push – we saw that in the second half [in Basel] and they did it against Tottenham.

“I am concerned – but I am not afraid. We know we have a good team and we are so close to the final. We have to concentrate and make sure we don’t make mistakes.”

Chelsea are without the suspended Ashley Cole, while Demba Ba is cup-tied.

The Blues have a number of other players walking a suspension tightrope, with David Luiz, John Obi Mikel, Ramires and Ryan Bertrand all a booking away from missing the final.

Benitez added: “We will do it with the best team possible for this game. It doesn’t matter how many bookings a player has so far.”

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