Speaking to Spanish outlet AS, Koulibaly said: "I have found happiness again on and off the field. At Chelsea things were not as I expected, I was not used to not playing. When the offer came, I understood that it could be the right decision. And it was like this: I am delighted and the championship, with the signings, it is growing. People underestimate the level of the Saudis. Many thought that we came here on vacation and they found out that this is not the case. We have 27 consecutive victories and we will not stop until we win titles.”