The likelyhood that he wont add much imediate impact is good, but I dont know why you "feel" a transfer sucks when you dont know the player, less likely to be special, considering the progression of his career so far, even if the 2 games I seen him he showed some decent skill, not enough to make me feel comfortable we are gambling on him, but all the same decent (I wouldnt overhype the Alves showing, I seen random players totally own quality players for a game).
Too little to have an opinion of him, except my opinion of that our starting LW SHOULD be less of a gamble and more proven signing/upgradge. But this signing is too cheap to be our starting one I think, I hope. But distraction aside, the question is, why do you think this transfer sucks, when you dont know the player?