Danish greats Thomas Gravesen and Flemming Povlsen have urged FC Copenhagen not to sell Roony Bardghji.
The 17 year-old Swede is regarded among the best of his generation and could start against Champions League opponents Manchester United this week.
Gravesen told Tipsbladet: " Why should a 17-year-old player with such great potential be sold? He must not be sold until he has proven that he can cost 6-7m. You must not sell a star."
Povlsen then chimed in: "You arrive at that almost regardless of what he has delivered."
Gravesen continued: "Well, shouldn't he cost 15m? If he plays against Manchester United and scores two goals. If he plays against Galatasaray and scores two goals. Yes, then he will cost 15m."