Chadli has made just eight Premier League starts since his arrival, with the club's mass of midfield bodies and a couple of injuries having disrupted his first campaign in English football.
Yet, despite being offered a more regular platform at the Liberty Stadium, and with a place in Belgium's World Cup squad on the line, the 24-year-old opted to stay with Spurs.
"It was a possibility, but it is in the past," said the Belgian international.
"I had to make a decision and my decision was to stay. Everything was not clear so I wanted to stay at Tottenham and play for my club. I have signed for five years and I'm happy."