Think I've mention this guy before but he looks like a real contender, Joshua Buatsi, light heavy:
The French guy he knocked out was unbeaten but clearly not on his level, so Buatsi himself will most likely be a world title contender in 2 or 3 fights. Like a lot of boxers he hasn't had much action for the past 18 months, which is a shame as he is now 28, but he still has time to challenge.
Explosive power and has that nasty edge when he gets in the ring, like he could really hurt people, but out of it he is a good guy. You can see when he was in the moment and fired that second shot on the guy on the way down he realised that the guy was already knocked out and started to apologise almost. It's hard to turn that instinct on and off in the ring like that.