The 25-year-old is keen to leave the Portuguese club during the summer and has been chased by a number of top European sides.
Spurs boss Harry Redknapp admits he is looking to sign another top striker. And he could now switch his attentions to Djalo after he saw a bid turned down for Palermo forward Abel Hernandez, says the Sunday Mirror.
Everton tried to sign the talented forward back in January.
But the move never went through and manager David Moyes is still keen to bring him to Goodison Park.
Djalo is now set to spark a bidding war between the Premier League rivals.