Palace boss Freedman determined to keep hold of Stoke, Newcastle target Zaha
"The kid's got huge potential and hopefully he can fulfil that," said Freedman. "He's working hard, I think his off-the-ball movement is getting better, he's developing his game.
"Wilfried can play at the top level if he continues going with his movement, he's got wonderful technique and ability. His all-round game is coming together.
"I've known that kid since 14 years of age, so it's a relationship which goes a little bit further than contracts.
"When he's ready and when I think he's ready to let him go to the right club, I will tap Wilfried on the shoulder and tell him I can't help him any longer. It's a little bit different with my kids, the relationship has been there a long time."