Of course all players have their heads turned, it's how respectful the player is when it happens.
As many have said, if Suarez had come out and been honest, then there wouldn't have been an issue as such, fans would have been upset but there wouldn't be the level of bitterness for what has clearly been a poorly instigated, underhanded method by Suarez to get out the club. I'm not sure what your point is about Barnes, that all players flirt with the possibility? That's missing the point by a margin, Barnes insinuated a few times that he'd like to play abroad, most players have done that at some point, there's a massive difference between that and what Suarez did over his move and more to the point, what Reina did over United and Barcelona. To be writing what's become a traditional send off and then utilise it to cry about being poorly treated, is a bit rich, given he was giving interviews a few years back, offering his services to the team we despise the most. I'm struggling to see why any fan wouldn't "get" the difference.