Chelsea new boy Fernando Torres said he left Liverpool because they were a club in transition and a long way from delivering the success he craves.
Torres, signed for a British record £50m on Monday, said: "Things had changed a lot in the last year.
"I think they have great ambition and they are doing the right things to get back but it will take time. I didn't have that time."
Torres said he would not celebrate if he scores against Liverpool on Sunday.