I want him. I watch videos like that and I see Keegan/Beardsley all rolled into one. He moves fast with the ball and has those quick little tricks that gain a yard. We could beat all of that out of him and turn him into a second choice left back within weeks.
I'd imagine this kid will be brought in to provide a bit of flair and squad depth for the inevitable injury crisis that effects our main creative players seemingly every season. He's just won the Portuguese league with Sporting so he has to have decent ability, whether he's physically strong enough to play Brucey's anti-football clogger tactics remains to be seen.