The Dutch midfielder left Manchester City for Saudi side Al-Qadsiah in a £52 million deal over the summer, only a year after his £46.5 million move from AC Milan, and has been at his new club for around a month.
He explained the financial thinking behind the switch: "Once my playing career is over, I don't want to have to work anymore. Of course, I probably wouldn't have needed to work anymore after my contract at Manchester City either, but this move allows me to secure the future of the next generations of my family.
"I'm not going to lie about that. By signing this contract, I can make sure even my grandchildren are financially secure, so why wouldn't I do it?"
Reijnders, who has one son, Xavien, with his wife Marina, is on a five-year deal at Al-Qadsiah reported to be worth around £86 million in total. His tone was different when he first signed in August, when he pointed instead to the club's ambitions.
"Especially the ambition of the club is what attracted me. The club wants to be the biggest in Asia and what they did already in the past and what we can do now in the future, it triggered me a lot. I came here to try and win trophies with my teammates - we're playing for four trophies, if I'm right. We want to win as many as possible and we are all very eager to do that."
Reijnders made 50 appearances during his single season at City after an impressive debut, but never quite established himself as a consistent starter under Pep Guardiola. He has scored three goals in five Saudi Pro League games for Al-Qadsiah, who are managed by Brendan Rodgers and currently sit fourth in the table, the position they have finished in for the past two seasons.
The club, owned by the state oil company Saudi Aramco, also features Nacho Fernández and Mateo Retegui among a squad light on marquee names compared with some of their Saudi rivals. Reijnders played three matches for the Netherlands at this summer's World Cup.