Torres joined Chelsea in a record £50million deal from Liverpool on the final day of the January transfer window.
Wenger said: “Torres was a last-minute transfer and, as a result, Chelsea had to pay for it.
“We can estimate that Chelsea paid an additional amount for Torres, about 15 per cent.
“Emotion and a lack of time saw the market value become inflated but, now, Chelsea could become even more dangerous.
“The trio of Didier Drogba, Nicolas Anelka and Torres represents a real danger.”
