Super Eagles midfielder John Mikel Obi has warned Chelsea's unhappy supporter about the impact of their negative conduct in the Club’s performance this season. The Blues recovered from a rather dangerous position against Manchester United on Sunday 10 March to keep the defense of the FA Cup alive. Speaking on the issue Mikel says: 'It is natural to lose confidence if things aren't going well. 'And sometimes it doesn't help either when the fans are not happy, when they get at you a bit if you give the ball away. That brings pressure. 'But this is our job. The fans pay to watch and we have a responsibility to give them something back and make sure we play well. Every game we try to do that. Sometimes it works, sometimes it doesn't.