Who is Brock Lesner's rival going to be on WWE?

I think WWE can script this forward with the easily possible 3 ways: -

1. HHH: Lesnar Vs HHH is what we have seen and till now, HHH have not won the fight. Hence it may be the time for the Game.

2. CM Punk: Heyman with the Shield which might be unknown to Punk and he can turn to become a face to oppose Heyman and result to a feud with Lesnar.

3. Ryback, Cena & Rock: Heyman forming a new setup similar to ECW with Lesnar, Punk & the shield. Which will work as a team against the team of faces (Rock, Ryback, Cena, Sheamus)

There's a possibility that with whom will Lesnar feud:

50% - The Rock. Recently, The Rock won the WWE title which he is holding almost after a decade and i'm damn sure that he's gonna lose it to John Cena at WM-29.

20% - CM Punk. Punk is still managed by Paul Heyman and there will be an exciting feud between two of the Heyman boys namely CM Punk and Brock Lesnar.

10% - Big Show. As of now it's the most best one if Brock returns and feuds with the World's Largest Athlete.

5% - Ryback. I know this won't be a good feud but one of the memorable PG era feuds as Ryback is considered to be the strong one.

5% - Sheamus. This would make up a good feud for Brock Lesnar.

5% - Alberto Del Rio. The Mexican aristocrat is the best one to test the waters of Lesnar's submission skills. Cross Armbar vs. Brock Lock and Kimura Lock.

5% - Randy Orton. Exciting one to see.

Hmmm.... Epico & Primo can be today's PG version of Hardy Boyz battling against The Next Big Thing.

Logically and from an old school bookers standpoint, it would be Ryback. A Brock Lenser/Ryback angle, if done right, would make a lot of money. A clash of two power houses would be a great move.

Also, I would create a faction-group or stable made up of CM Punk, Brock Lesner, The Sheild( Dean Ambrose, Roman Reigns, and Seth Rollins) headed by Paul Heyman.

Im saying Ryback,WWE is wanting to push Ryback big but not all the way to winning the championship yet so having him rival and beat Brock for a few months will keep him in the spotlight while Rock does his thing

It's most likely going to be HHH first then he might get a shot and win the WWE title, he'll most likely go on rivalry with Cm punk after that cause punk would make a big thing how he should be champ with heymen not Lesnar and finally before his contract expires he will take on The Undertaker at Wrestlemania.

Brock will feud with Triple H's again, they set that up last night when they had Brock F-5 Vince, so now Triple H's will have to get revenge for Brock f**kin up his father-in-law

Cm punk and Brock will be tag partners and rivals with rock

Triple H

Hopefully CM Punk so Punk can eat hospital food.