WWE Superstar and former United States Champion Rusev revealed in a tweet that he will be taking time off.
In Bulgaria they say The rest makes the champion. It's time to take time off working out. 30 days and counting.
— Rusev on the Roof (@RusevBUL) February 28, 2017
As of now, Rusev is not advertised for any WWE events until a tour that starts on March 17. That means he will be gone for less than 30 days. However, if he is indeed taking 30 days off, that means he will be absent for WrestleMania 33, which is taking place on April 2, 2017.
If Rusev were to miss WrestleMania, it would be the first WrestleMania that he has missed since making his main roster debut in April, 2014, as he has been present for both WrestleMania 31 and WrestleMania 32.