With the Christchurch-based club on a five-match winning streak and sitting at the top of the table with a 7-2 record, Mo'unga was hoping to help their push toward the post-season.
And with the first All Blacks squad of the year to be announced on May 30, Mo'unga would have a few weeks to put his hand up for another shot at wearing the black jersey.
However, the No.10 was focused on the task at hand first and foremost.
"For me, it's just about the crusaders first," he said. "[Mike] Delany and [Mitchell] Hunt have been doing an awesome job, so for me it's about coming in, carrying that on and making sure I'm adding value to this team."
Joining Mo'unga in making his return from injury is midfielder Jack Goodhue, who is coming back from a hamstring injury.
The pair will take their spots in the starting line up for Friday's match against the Rebels in Melbourne.
Crusaders: David Havili, Seta Tamanivalu, Jack Goodhue, Ryan Crotty, George Bridge, Richie Mo'unga, Mitchell Drummond, Jordan Taufua, Matt Todd, Pete Samu, Sam Whitelock (c), Scott Barrett, Owen Franks, Andrew Makalio, Wyatt Crockett. Reserves: Codie Taylor, Harry Allan, Michael Alaalatoa, Mitchell Dunshea, Heiden Bedwell-Curtis, Bryn Hall, Mitchell Hunt, Manasa Mataele.
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