Bale had been made an outcast by manager Zinedine Zidane and he looked set for a big-money move to China, only for the deal to collapse at the last minute.
The Wales captain dismissed it as being the most difficult time of his career by saying he recalled ‘not playing for a year under Harry Redknapp’ at Tottenham.
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“It didn’t impact on me too much,” said Bale, speaking about his summer of uncertainty in Madrid.
“I don’t listen to them (the critics) because they don’t really know what they are on about. I know most people don’t know the situation, don’t understand the situation.
“Coming back to pre-season, I just kept my head down and worked hard in training. I feel good, probably stronger than ever at the moment.
“The things that happened will stay private with the club. If you want answers, maybe you need to ask Real Madrid.”