Brighton are set to sign NEC Nijmegen attacker Alireza Jahanbakhsh.
De Gelderlander says NEC have accepted a €2 million offer from Brighton for Jahanbakhsh.
But the Seagulls are yet to agree personal terms with the player.
"There is enough interest, so we have no hurry," stated Amir Hashemi, the agent of the attacker.
"Ali just needs to think very carefully about this step."