Bale has struggled to make an impact at White Hart Lane this season due to the form of left-back Assou-Ekotto, who Redknapp considers one of his most improved players in the last year.
Assou-Ekotto's form has earned him a call-up for Cameroon and means he will miss games in January, with Bale ready to step up rather than going out on loan for experience.
Fine form: Assou-Ekotto
'He's worked hard, trained well and has been in good form,' Redknapp said. 'He's beginning to take his game forward. It's just that Benoit's been in great form, so Gareth has been unlucky not to play.
'I'm not looking for a left-back because you won't get a better one than Gareth Bale. He's an excellent player.'
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