Maurizio Sarri is unsure about his future as manager of Chelsea.

Sarri's future could be decided by Chelsea's next two matches: against Malmo in the Europa League and Manchester City in the Carabao Cup final.

"I have to think that I will be the manager of Chelsea for a long time, otherwise I cannot work," Sarri said. "I am not sure [it will work], but I have to think this. I have to work, and I want to work with a long-term target."

Key to supporter frustration with Sarri has been his reluctance to move away from his preferred 4-3-3.

"The system is a false problem," he insisted. "I know very well that, when we lose, [they say] I have to put a striker on the pitch. When we win, I have to put a defender on the pitch. But I want to see the football in another way."