I guess I'm the only one who thinks Pienaar isn't quite that good. Good, yes, but not good enough to get into the top four teams (Arteta is still the only one who would, and hopefully Fellaini will be that good).
He does create stuff, but his problem is he is often invisible. And he is no winger, he should play behind the frontmen. He doesn't beat his man on the wing, but has a knack of first-time passing which would be much more useful in that area. Whether he is good enough to give him a free role like that is a different matter.
There is potential but he has to be involved more.