Jose Mourinho says Tanguy Ndombele "realised that he had to change' after his slow start to life at Tottenham.
Ndombele became the most expensive signing in Tottenham's history when he moved to north London from Lyon for £54 million ($73m) in the summer of 2019.
The Frenchman arrived at Spurs with a sterling reputation as an all-action midfielder with a penchant for breaking up and kick-starting attacks, but struggled to adapt to the demands of English football during his first season in the Premier League.
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Mourinho publicly questioned Ndombele's fitness levels while reducing him to a bit-part role in his squad, leading to question marks over his future.