John Cena's WWE retirement tour is about to conclude next week when he will face Gunther in his final match at Saturday Night's Main Event. During this entire tour, the Last Real Champion achieved a major feat.He became a 17-time World Champion and even became the Grand Slam Champion. Cena went head-to-head with legendary opponents, including Randy Orton and Brock Lesnar.Despite this, the five biggest WWE stars didn't get a chance to face The Cenation Leader. In this article, let's briefly discuss those five names.#5. Roman ReignsOne of the biggest names who missed Cena's retirement tour is Roman Reigns. The Original Tribal Chief already had a heated history with The Franchise Player. They clashed twice before, with Reigns defeating Cena both times. Cena's retirement tour was a perfect chance for the veteran to seek revenge for his previous loss and finally beat the Original Tribal Chief. However, the OTC's absence from the retirement tour seems like a major mistake by Triple H.#4. Seth Rollins𝙎𝙖𝙢 @RhodesKotaEraLINK1 minute and 43 seconds of Seth Rollins talking with nothing but praise and love for John Cena 🥹 Shame that these 2 will never wrestle each other again 💔Another name on the list is Seth Rollins. Like Roman Reigns, Rollins also had a long history with the 17-time World Champion. Even John and Rollins were major rivals during the storyline of Team Cena vs. Team Authority. Despite this, The Visionary didn't face The Cenation Leader in his final tour.As of now, Rollins is expected to attend Cena's last match at the upcoming Saturday Night's Main Event.#3. Drew McIntyreDrew McIntyre is currently one of the biggest heel stars in the company. McIntyre wasn't directly involved in Cena's retirement tour but merely competed against him in a tag team match on SmackDown. In that bout, Rhodes and Cena teamed up against Logan Paul and The Scottish Warrior. However, WWE should have booked McIntyre in a singles feud and a proper storyline against Cena during his final in-ring months.#2. LA KnightJ O H N @RomanEra0LINKJohn Cena prasied LA Knight for his 70+ matches this year: “I saw a stat, I think LA Knight had most wwe matches this year 70, it makes me smile, Now talents can wrestle longer” (The Ringer)LA Knight had a great chance to be part of John Cena's WWE retirement tour, but he suffered a loss to Gunther in the finals of the Last Time is Now tournament, making him an addition to this list.Knight and Cena previously shared screen time on television when the Franchise Player appeared as a special guest referee in The Megastar's match. A match between these two stars could have been a great fit for the retirement tour, but WWE missed this opportunity.#1. WWE star Bron BreakkerThe last name in this list is Bron Breakker. The new Big Dog of WWE is getting a major push on the main roster and is even set to face CM Punk in a World Title match in 2026. However, he notably missed the retirement tour of John Cena.The 17-time World Champion putting over Breakker before hanging up his boots could have been a strong way to put Bron as a future main eventer in front of the audience.