The former Manchester City and Tottenham striker joined Palace on a six-moth loan spell in January last year but was released at the end of that season after scoring just once in 15 appearances.
"I had some great experiences in England in clubs who are among the best in the country," said Adebayor, who currently plays for Turkish side Istanbul Basaksehir.
"The only error that I made was to sign for Crystal Palace in January 2016.
"I did it just to please my entourage, who were saying to me: 'Manu, you have to start playing again!' It was the worst decision of my career."