Bale's profile rocketed when he scored a second-half hat-trick against Inter Milan in the group stages in October before running rings around Maicon in the reverse fixture the following month.
The 21-year-old is likely to start the second leg of the club's Champions League last-16 tie against Milan, which Spurs lead 1-0, from the bench and Redknapp said: "I don't think there is a better left-sided player around. He has got everything. He is 6ft 2in tall, the physique on him is incredible, the pace, the ability to cross the ball, shoot, dribble, head it, he can do everything."
He added: "The world sat up and recognised him after what he did to Inter but he has been tearing teams to pieces for over a year. He's done it against everybody, really."
Bale came through a training session on Tuesday but felt stiff afterwards, meaning Redknapp is likely to deploy him as an substitute.
Redknapp thinks the Italian giants will be scared of the impact he could have off the bench.
He continued: "If Milan see him on the bench it will give them a few concerns.
"I'd love to see him start but he's doubtful at the moment. This morning he felt he wasn't quite ready to start (the game).
"His back was okay but he felt a little stiff in his legs."
Source: PA
Source: PA