In a Q&A session on Facebook, James Gunn (Guardians of the Galaxy and Guardians of the Galaxy Vol. 2) explained Nova’s possibility of appearance after Avengers: Infinity War in Marvel’s cosmic movies. Guardians 3 is to be set after Avengers: Infinity War.
Gunn elaborated, saying that the third Guardians film will help “set up 10-20 years of new Marvel movies.” After his critical and financial successes with both Guardians movies, Gunn now seems to have enormous pull with Marvel Studios, especially the cosmic properties. So Gunn’s response to the question about Richard Rider’s potential appearance in the MCU has weight to it:
Yes, definitely. Nova comes up occasionally as someone we might use. One of the things I’m doing with creating Guardians of the Galaxy Vol. 3… it will take place after the next two Avengers movies and it will help to setup the next 10-20 years of Marvel movies. It’s going to really expand the cosmic universe. We’re going to be setting up new characters. It will be the last movie of this version of Guardians of the Galaxy.
Richard Rider is the most popular and well-known incarnation of Nova.
Guardians of the Galaxy Vol. 2 is now on Blu-Ray and DVD
Guardians of the Galaxy Vol. 2– Peter Quill and his fellow Guardians are hired by a powerful alien race, the Sovereign, to protect their precious batteries from invaders. When it is discovered that Rocket has stolen the items they were sent to guard, the Sovereign dispatch their armada to search for vengeance. As the Guardians try to escape, the mystery of Peter’s parentage is revealed.
Source: James Gunn’s Facebook