#4 Kofi Kingston

WWE's SmackDown Live brand moves over to Fox later this year, after the two giants signed a huge deal to air the blue brand, which will move to Friday nights.
There have been several reports doing the rounds that WWE could move over some big names to the blue brand. It seems that WWE have already done that by moving Roman Reigns over to SmackDown Live.
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Another man who could join Reigns on SmackDown is Brock Lesnar, with a few reports suggesting the same. We could maybe see that switch happen starting from the Saudi Arabia PPV.
Lesnar could face off against Kofi Kingston for the WWE Championship, which would be an interesting feud. The two have faced off against each other in singles competition once previously, in the Beast in the East PPV back in 2015, where Lesnar won.