Sky Sports News understands Newcastle United have rejected a £10million bid from Tottenham Hotspur for Sebastien Bassong.
The French defender has attracted a wealth of interest over the summer following Newcastle's relegation from the Premier League at the end of last season.
Bassong has admitted that he would be keen to leave St James' Park in order to stay in the top flight and has claimed there has been interest from Arsenal.
Everton and Manchester City are also reportedly keeping tabs on the 23-year-old, while Spurs have now moved in with a firm bid.
Spurs boss Harry Redknapp is keen to bring in a new centre-half before the start of the season with injury doubts surrounding Jonathan Woodgate, Michael Dawson and Ledley King.
The club's chief scout watched Bassong in action in Newcastle's friendly at home to Leeds United in midweek and Spurs have subsequently made an offer.
Newcastle have rejected the initial bid and are in no rush to sell Bassong due to the number of clubs chasing the former Metz stopper.
Bassong made 34 appearances for the Magpies last season after his arrival on Tyneside and was one of the better performers as the club lost their Premier League status.