Norwich City have turned down a Celtic bid for Adam Idah understood to be around £4m to £5m.
The Republic of Ireland forward, 23, spent the second half of last season on loan with the Scottish champions, scoring nine goals in 19 appearances.
He netted the Glasgow club's final goal of the campaign, the solitary winner against Rangers in the Scottish Cup final, which sealed a league and cup double.
Norwich told BBC Scotland that they are not actively trying to sell Idah and say new manager Johannes Hoff Thorup is excited to start working with him.