Manchester City are unhappy with the speculation being made about Kolo Toure's failed drugs test.
City say the discussion is proving "unhelpful".
"The football club has noted public comments by a number of parties connected to Kolo Toure, regarding the ongoing matter of his current suspension," said a statement posted on the club's official website.
"Whilst the club will continue to make no comment on the nature, status and possible outcome of this case until its conclusion, it would like to stress that public statements from such individuals are unhelpful and in some cases untrue.
"The club would like to make it absolutely clear that until comments made by a Mr Gouriso in particular appeared in the public domain, officials of Manchester City knew neither of his existence nor even of his purported connection to Kolo Toure.
"Suggestions that he has spoken to club officials are wholly without foundation."
