Bale was forced to come off at half-time after scoring the opener in Tottenham's 3-1 Carabao Cup quarter-final win over Stoke City on December 23.
Mourinho revealed post-match that the winger had sustained a calf injury, and subsequently left him out of his squad for the Premier League meeting with Wolves on Sunday, which ended in a 1-1 draw.
Bale struggles for fitness have been well documented since his return to Spurs from Real Madrid on a season-long loan in September, with the 33-year-old only managing to score three goals during 11 appearances in all competitions, the majority of which have come from the substitutes bench.
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