As with any online stories always pays to save the excitement until there is confirmation. I've certainly seen lots of hype about this guy but not really watched him. In terms of signing it looks positive but whatever the highlights reel or talk that they are like X player you only really can judge on performances in the team.
That's where I usually make my assessment as coming to a new and higher level league and different team can significantly impact how a player performs so it's difficult to make credible comparisons until then.