Crystal Palace boss Dougie Freedman will give Antonio Pedroza every chance to win a contract.
The Jaguares striker is trialling with Palace after seeing a move to Tottenham fall through upon his arrival from Mexico.
"He's got a tight hamstring and I've got to make a decision on him over the next week," said Freedman.
"I've got to get him fit again, maybe get him in a game behind closed doors, and then I can make a decision on him."