Maduro has seen fellow Dutchman Ronald Koeman lose his job in recent weeks, but says he has no regrets over his move from Ajax.
"I feel good here. I came to this club because it is big," said the midfielder. "I have left four years on my contract and I want to fulfill them. I am going to improve because I am young and I have potential.
"Starting from next season I will be able to demonstrate my ability better."