make noises about (something)
To have a very broad, general discussion about something one might do or wants to do, without getting into specific details or plans. She's been making noises about going to art school for years, but so far she hasn't made any steps toward making that happen.
COMMON If you make noises about something you might do, you mention it briefly in a way that is not definite or detailed. Hall has recently been making noises about buying back the club. His mother had started making noises about it being time for him to leave home. Note: Adjectives are sometimes added before noises. He made all sorts of encouraging noises that he would love Scotland to stage the European Championships.