Tottenham Hotspur has been put on alert after winger Christian Atsu turned down an offer to extend his contract.
The Portuguese giants were hoping to tie down the 20-year-old to a long-term deal but reports suggest negotiations have broken down.
The latest development has put Tottenham alert with manager Andre Villas-Boas still interested in the player that he nurtured during his time at Porto.
The English side failed in their attempt to sign the player during the summer but will now re-enter the race to entice him to White Hart Lane.
The Ghanaian international has also attracted interest from Borussia Dortmund and Valencia.