West Ham United are preparing to make a move to sign Tottenham Hotspur's veteran French defender William Gallas, according to The Sun. Hammer boss Sam Allardyce, as he often did at Bolton, is keen to add some experience to his side and is often prone to a free transfer bargain for a once world class player. Gallas, a two time Premier League winner at Chelsea, is thought to be surplus to requirements at Spurs as they would prefer not to continue paying his high wages and he is likely to move on a free transfer. Allardyce recently released 34-year-old Stoke defender Abdoualye Faye and is unlikely to make last season's loan spell for 31-year-old Stoke defender Danny Collins a permanent one and is in the market for a new defender. He is also mulling over making an ambitious offer to Dutch legend Clarence Seedorf, 36, who may want to try one season in the Premier League. Meanwhile Spurs have not lost hope in signing Belgium defender Jan Vertonghen after a move from the Dutch Champions Ajax stalled this past week, likely because of the uncertainty over who will manage next season.