The only issue with Bebe was it's cost, kind of "why him?".
I doubt you can find at United squad and reserves a single player at this level of cost with a more obscure past.
It's too soon to know what will come of this one. But I can't help but wonder how bad formation is in England if it's preferable to pay 9 million euros for an unknown player of the Portuguese third division of football and have him going straight to the first team than to pick up any other youngsters for the same purpose.
If you had seen glimpses of brilliance of him maybe you could think "yeah, we found a hidden pearl, our scouts are doing a great job" but so far he hasn't showed anything to justify him being special.
I wish him well. Not too long ago he was wondering if he would make it into Guimarães first team and how hard he would work towards that. Suddenly he's being subbed in at the first 5 minutes in a league game at Old Trafford. Talk about pressure, I hope he does well.