By ESPNSTAR.com staff
The Crystal Palace starlet is set to make his England bow against Sweden in Wednesday night in a friendly, but could still represent the country of his birth - Ivory Coast - due to FIFA regulations.
"England is a big nation but don't forget that Ivory Coast is a very big team at the moment," Eriksson told talkSPORT.
"Either of them could be in the final in Brazil at the next World Cup. He has to make a decision with his brain and his heart.
"It might come down to the chances he gets to play. That's how players think about this sort of decision. He needs to work out if he's feeling more English or Ivorian.
"I'm quite sure he will be happy if Didier Drogba, Yaya Toure, Kolo Toure and all these big stars start to phone him. If he's only thinking about footballing matters it's not an easy choice to make."
FIFA would allow Zaha to change national team to the Ivory Coast even if he plays on Wednesday against Sweden because the match is a friendly and not deemed a "competitive fixture".