But Holloway told the South London Press in the aftermath of his side's 2-2 draw at Nottingham Forest on Saturday that Zaha needs to concentrate on recapturing the form that saw him make his England debut against Sweden in November.
Holloway said: "Playing for England. So what? It's four minutes. I don't want to sound funny but I'm more concerned about us working with him and getting him playing how he was a couple of weeks ago. That's all I worry about.
"Do I know more than most that those vultures at the top who get bigger and bigger and bigger with the Champions League money, they'll be swooping - won't they?
"It's just not right. Some of these young lads should be left to play - and play well - learn their game. The great thing about Crystal Palace is they've helped Wilfried Zaha play over 100 games and he's still only just 20.
"If you look at Scott Sinclair he had to leave the club he was nurtured with and taken from Bristol Rovers by Chelsea to get his career going. Now he's ended up at Manchester City - when will we see him again?
"I find it unbelievably frustrating that we all think our England team isn't good enough because there isn't enough of them playing in the Premier League - they are stacked and racked and they can't get in their teams because some of the best players in the world are already playing because their manager or owners want them.
"So what's going to happen to our game? I think they should be left to develop."