Mancini claims Nasri is playing at only 50 per cent of his capabilities.
He said: â€śSamir can do better than this year. He is a top player but he has not been playing at his level. Sometimes a player thinks itâ€™s enough what they did the year before and doesnâ€™t understand that every day they should improve.â€ť
Mancini added: â€śSamir has fantastic qualities. He should always play well.
â€śA player of this quality could be one of the best players in Europe. But itâ€™s not happening.
â€śIf you are a top player you know you can improve until the last day of your career. But sometimes you get players who think it is not important to work and this is their worst mistake.
â€śYou win the title, you think itâ€™s enough to play 50 per cent and you donâ€™t arrive the next year.â€ť