WWE is still unsure of how it plans to treat John Cena‘s last wrestling match, and may choose to put it up against their rivals big event. According to Bryan Alvarez during a recent episode of Wrestling Observer Live,

According to multiple reports, the main event of the unnamed WWE PLE in Indianapolis will be John Cena and Brock Lesnar.

It's there that Lesnar and Cena are scheduled to headline the show. It can change, but the main event for this show is Brock Lesnar and John Cena. So it’s a big one. Which is why Brock’s not in Paris,