The Bafana Banana international suffered another setback on his troublesome foot injury during Sundowns' training camp in Morocco ahead of their final group fixture.
According to a source, Sundowns' doctors have advised the technical team not to play Coetzee against Wydad to ensure he has a chance of being available for the national team's all-important Africa Cup of Nations qualifier against Libya in Tunisia on March 24.
"Rivaldo did a check-up with the club after he was struggling with his foot injury, it's not something hectic but he won't feature tomorrow," the source tells KickOff.com.
Coetzee was called back to the national team after being out of favour for a long while but can now be considered a doubt for the Libya game. He joined Sundowns ahead of the 2017/18 season after a move to Glasgow Celtic in Scotland fell through due to a failed medical.
Pitso Mosimane raised doubts earlier in the season on whether Coetzee would ever fully recover from his injury nightmare.
"We can do nothing, we have to wait, he's kicking a little bit, he's touching the ball but still complains about pain. Sometimes he is okay but I feel sorry [for him], what a talent," Mosimane said back in late August.
"I told him that he needs to pray a lot, maybe these things can change you never know. If you guys know anyone who can help, support. We will put him on any flight in the world to get him better."