WWE are going to feature a huge surprise on tonight's Raw, and it could be WrestleMania 32 related. "Something big is happening, probably WrestleMania related," Dave Meltzer commented on wrestling observer radio, as he and Bryan Alvarez previewed tonight's Raw. Alvarez then offered an alternative theory, suggesting that UFC Interim Featherweight Champion Conor McGregor could be appearing in a segment with Sheamus. However, Alvarez then quickly shot down his own theory. The two Irishman had a war of words on Twitter earlier in 2015, but McGregor is very unlikely to appear on WWE television. He's arguably UFC's biggest star behind Ronda Rousey, and it wouldn't make sense for him to risk his star power. So a Mania 32 announcement is the likely surprise. Logically, it would be the announcement of Brock Lesnar versus The Undertaker as WrestleMania's main event. The two men had a disputed finish at SummerSlam, with Taker getting the win to even up Lesnar's win from Mania 30. A rubber match at Mania 32 would complete the trilogy. The other thing that tonight's surprise could be, would be Sheamus cashing in Money In The Bank. Seth Rollins is now WWE and US Champion, after defeating John Cena in SummerSlam's co-main event. It doesn't make sense for Rollins to hold both belts for very long.