He told ESPN: "Of course, this season so far has been very frustrating. There are things that we can no longer recover: the Champions League, winning the Premier League. We're out of the two most important competitions so we're very, very sad. I'm sure that with some changes that the club will probably make at the end of the season because that's how it is when you don't win in football, we will try to bring this club back to the level it should be at."