#3 Finn Balor wins clean
We admit ourselves, this is a very unlikely scenario too. Finn Balor has been getting a push in the last few months and the rumours of that being the case happened to be true. This makes one thing clear: When Strowman had his "match" at TLC, WWE was well aware that they needed a back-up plan in case he wasn't cleared on time.
Among all the options, the four they clearly narrowed it down to were John Cena, Drew McIntyre, Baron Corbin and Finn Balor. With Balor getting pushed in the last month, what we can conclude is that he was being heated up for a potential replacement.
He has momentum on his side as he hasn't been pinned in a while. There is a possibility of a scenario that WWE wants him to be one of the top faces (or even heels down the road) going forward, and with Brock Lesnar rumoured to fight Daniel Cormier soon, he may be going out of the door sooner than we think.