Spurs are already top scorers in the Premier League so far, with Bale building up his fitness up following a disjointed pre-season.
“He needs to get up to speed, but he is a world-class player," said Crouch, who played with Bale in his first spell at Tottenham.
“He was electric at Real Madrid, absolutely unbelievable. If we get half the player we are still going to get a very impressive player and a huge bonus for Tottenham.
“If a player of that calibre feels wanted and he's happy around the training ground then you are going to get a top player."