Well I don't want this "one" signing to be De Guzman. I was merely thinking if we were going to get an emergency loan in, if Clev is badly injured, that it would be quite ideal. I'm so used to seeing a central player out wide that when Cleverley got injured I didn't think "ooooh now we'll see two wingers", I thought "Osman, Naismith or Ross... which one's getting shunted out wide?"
Pienaar really wasn't as directly effective as you're implying though, I don't think. He was more indirectly effective (hence low assist/goals). His game was all about bringing others into play, which is because as you say, he was a playmaker (using the past tense there... already feels like he's retired ffs). But in my mind a winger is someone with pace who drives at teams. Wingers are your threat from wide, they are not the players who enable your fullback to be your main threat from the flanks. In my opinion anyway!
Ultimately though this is all a bit pointless, because I think we all know this signing is going to be underwhelming.