At the previous WWE Premium Live Event which was The Night of Champions, “The Visionary” Seth Rollins won the newly introduced World Heavyweight Championship after he defeated AJ Styles. He is still holding the title and is going pretty strong.
Seth Rollins promised the WWE Universe that he would be a fighting champion and he would defend his title regularly. So far he is keeping his promise. After winning the title on May 27th, he defended his title for the first time last week and he would be defending it again at Money in the Bank.

Unveiling The Next Challenger: Seth Rollins To Face A Formidable Opponent For The World Heavyweight Championship – What To Expect
Before last week’s RAW, Rollins threw an open challenge on social media and it was answered by Damian Priest. Last week he successfully defended the title against Priest on the main event of RAW. Fans are pretty much pleased with the way the title is being booked so far.
The other World Champion of WWE, that is Roman Reigns, has not defend his title since WrestleMania 39 and it looks like he is not going to defend it before Summerslam. So in four long months he would defend his title only once. Clearly, the World Heavyweight title is booked more competitive than the Universal title.

Finn Balor Challenged Seth Rollins For World Heavyweight Title At Money In The Bank
So who is going to challenge Seth Rollins next for the World Heavyweight Championship? Last night on RAW, the inaugural WWE Universal Champion Finn Balor called out Rollins and reminded him that he defeated both the current World Champions of WWE in order to become the first ever WWE Universal Champion.
At the end of the segment, Finn Balor ended up challenging Rollins for the World Heavyweight Championship and Rollins accepted the challenge. The match ultimately got official for Money in the Bank. This is going to be the second title challenge for Rollins.

So what to expect from this match? As we are all aware of the fact that Rollins got a major role for the upcoming Captain America: New World Order so we can expect him to take time off soon and drop the title. But would he drop the title at Money in the Bank? That remains highly doubtful. Maybe at Summerslam, which is a major event.