LEGIA Warsaw chiefs have issued a hands-off warning to Celtic over star midfielder Michal Zyro.
Boss Henning Berg has insisted that Zyro, 21, is not for sale.
He added: “Zyro has the potential to be a top player.
“We will not sell him now. When we do sell him it has to be right for us and he should be ready to go into a club and play every week.
“It is better for him to play with this team for at least a year. If he continues his development then we know what football is like, players are sold.
“It is about timing and the timing is not right. I’m sure in time Celtic and other teams will be interested.”
Zyro, who regularly appeared for Poland’s Under-18 and Under-19 teams, has scored seven goals in 64 appearances for the Ekstraklasa outfit.
He scored in Legia’s 5-0 drubbing of St Patrick’s Athletic in Dublin last week.