Gareth Bale has struggled to find regular game time this season.
The Welshman returned to his former club seven years after his then world-record £85million move to Real Madrid.
But Bale has been restricted to only seven appearances this season and his former teammate Darren Bent believes he might be able to rediscover his old form which established him on the world stage.
“It’s a gradual process but at the same time it’s a year loan,” Bent told talkSPORT.
“For me, the question you’ve got to ask is how long is Mourinho prepared to give him before he goes ‘this is not working’.
“All the talk has been about [Heung-min] Son and [Harry] Kane being superb, but when they get Bale back, when Bale gets back to himself, Bale this and Bale that.
“But right now he’s nowhere near the Bale we can remember.
“He’s not played consistently for about three years and he’s had big injuries as well, so that Bale may never come back.”
“Do you think there’s a point in the season where he could become a distraction? They have to make a decision,” Bent added.
“It’s a year loan and if it continues like this what do Spurs do? Send him back to Madrid or keep him?
“So for me how long are they going to give him and how long are the fans going to give him before they go ‘listen, we can’t keep waiting on him to come back’… [Steven] Bergwijn needs to be playing and Lucas Moura need to be playing.
“It’s kind of a strange one, but at the minute the signs don’t look great.”