Fair enough. I agree he's done fuck all relative to his talent, but the season is long and he will get plenty of chances to show his worth. I'm happy he's reached nowhere near his potential because I think he could become a far better player than Silva or Mata.
It boils down to whether players would prefer being a bit part player in a title winning side to a star player in an average team. Don't know anything about Nasri's mindset so can't say anything about that, but would he be receiving this level of hate if he went to United and was playing (as far) below his level? Doubt it.
If someone chucks money at you, you take it. 99% of the people on here would do the same thing.