Kakuta is on-loan at Rayo from Chelsea, but has failed to live up to expectations since bursting onto the scene as a France youth international.
He told Fichajes.com: "I have some responsibility, because at some clubs with which I was playing I did not do enough.
"But as I said, I've matured and I've learned from all these experiences. I know the expectations, but I have only just turned 23 years of age.
"Some players debuted as a professional at 27, so I have time yet..."
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