Bale has struggled in pre-season with thigh and knee problems and Spurs are already without skipper Ledley King for the trip to Sunderland as they start their bid to break into the top four.
"Hopefully I will be ready to get back to training soon but I´m not sure if I will be ready for Sunderland," said the 18-year-old Wales full-back, signed this summer in a £10million deal from Southampton.
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