But the Spaniard admits winning the Champions League is a burning ambition.
Silva, 27, said: "I think my career in itself feels complete now but it doesn't stop you wanting to improve all the time as a person and a player. Each year you start again, want to learn, work hard and keep winning - whether it is complete or not.
"The Champions League is the real motivation. Every trophy you could win serves as a source of motivation.
"You want to get better each year and win more and more.
"And, from a personal point of view, I want to win the Champions League."
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