Barry and Berbatov, two players who have made it clear they don't want to play for their current club.
You can canonise one and demonise the other if you like but they have both used tactics to achieve the same end. I see little difference between petulant sulking and overt critisism of your club and manager.
The only dufference is that there is a queue of clubs willing to meet one's valuation. Draw your own conclusions!!