nothing in it
anything/nothing/something ˈin itany/no/some truth in what is being said: ‘Is there anything in the story that he is leaving the company?’ ‘No, I’m sure there’s nothing in it.’/‘Yes, I think there’s something in it.’
(there’s) nothing ˈin it
1 (informal) used to talk about a contest where the competitors are level and it is hard to say who will win: Right up to the end of the game, there was nothing in it. Either team could have won.
2 (of a rumour, report, story, etc.) there’s no truth in it: There was a rumour that he was about to resign, but apparently there’s nothing in it.
See also: nothing