Shiels last week said Ipswich were one of a number of English clubs competing with Rangers for the signature of the Scotland international, who is out of contract in the summer.
But Ipswich boss Mick McCarthy later denied any knowledge of the club's reported interest.
McCarthy told the East Anglian Daily Times: "It was a lie if he confirmed it.
"Do you want me to say it again? There's no truth in it - he's lying or he's telling fibs. Is lying too strong a word?
"I've not spoken to him and if somebody from this club has spoken to him they've done it without me saying so. If that's the case then I'm going to be pretty cheesed."
Shiels told STV: "An agent contacted me last week to say Ipswich were interested in Cammy and he also mentioned other clubs from England.
"I'm only relaying a message when I was asked the question about Cammy's future."