Crystal Palace are on the hunt of a Denmark Under-21 international this winter.
The London outfit are among the Premier League clubs monitoring Celtic midfielder Matt O'Riley, says The Sun.
The youngster has been hugely impressive since arriving in Glasgow in January 2022 from MK Dons.
The 22-year-old has scored six times and provided five assists in 12 league games.
He also has two Champions League assists to his name so far this term.
While Celtic want to hold onto O'Riley, bids north of 10 million will be hard for them to turn down.