Lennon is well aware that these clubs, and a few others, are in the queue for Ambrose's services but he is of the belief that African Cup winner is content in Glasgow with the Scottish champions.
"Efe has got a few admirers out there now on the back of his performances this season. There has still been nothing concrete but I've been made aware of it - put it that way," he said.
"There is interest from top teams.
"He has been a great signing for us. He's also brought the best out of (fellow centre-half) Kelvin Wilson, who has been really magnificent.
"At European level they have made us better."