Premiership clubs are on red alert with Neil Warnock declaring every player at Crystal Palace is up for sale.
Victor Moses is a major target for top-flight clubs, including Wigan, Tottenham and Arsenal.
Warnock told the South London Press: "Everybody has got a price and I can't stop people coming in for them - we'll just have to wait and see what happens.
"The chairman doesn't want to decimate the team but we have to generate some funds. But I'll be fighting tooth and nail to keep people like (Darren) Ambrose and (Julian) Speroni."