West Ham United boss Sam Allardyce says they won't spend big before moving to the Olympic stadium.

West Ham are still £60million in debt and incoming FIFA rules on balancing the books mean teams can no longer live in permanent overdraft.

Allardyce said: "There is a big motivation for everybody to try and get West Ham to become the biggest club it's ever been.

"But the days of huge money being thrown at transfers look like they might be restricted, so the growth of West Ham might not be as quick as we would all like.

"We are telling the fans now that it might be a problem and we can't spend it because we are not allowed to. The fans will probably take a while to understand that and I know the players and agents will.

"So when we turn round to an agent and say, 'We would like to pay you that but under the new regime we can't', we'll go off somewhere else and hopefully find everybody will say the same and it will bring a bit more financial stability to the game.

"But from my point of view it doesn't help that I want to build a team as quick as I can and promote an exceptionally good Premier League side in that stadium."