Clinton Morrison is urging new England coach Sven-Goran Eriksson to involve him in his international plans.
The Palace striker says he will play for the Republic of Ireland if Eriksson shows no interest.
The Swede will need to act quickly because Morrison says Republic boss Mick McCarthy has already left him in little doubt that he wants him in his side.
Morrison, in an interview to be broadcast by Radio 5 Live, stressed that he needs to make his decision quickly because the Republic have an international friendly coming up against Denmark at the end of next month.
He said: "Mick McCarthy has contacted me and says he wants me there - so I will have to see what England are saying and then decide.
"Ireland have a friendly coming up, so it will be a hard decision. I will have to sit down and think about it.
"I have my heart set on Ireland or England. I would dearly like to play for England, but it is a hard decision to make at the moment.
"But it would be international football (with Ireland), and it looks as if they are going to the World Cup."
Morrison, who has an Irish grandmother, acknowledges he needs to be playing Premiership football if he is to be taken seriously as an international and added he is prepared to work hard to try to make the top flight with Palace.
If that plan does not work, though, he nominated champions Manchester United as the English club he would most like to play for.