http://www.freep.com/story/sports/c...16/04/10/albom-wings-datsyuk-column/82835594/
This isn't speculation. This is from the interview with Mitch Albom. Datsyuk's extension came in 2013, after he was already "squirming".
Look, I don't know how hard the Wings pushed more years, but I do know he almost left last season. And now he wants to go again this season. This is a guy that says he regrets signing his longer deal and has done nothing but pine about going to Russia every off-season. It took a hard sell to even get him to suit up this year.
Is that indisputable? I don't know. I'm sure you can find something to laugh about. But this isn't being pulled out of thin air that Datsyuk has been eyeing home since before he signed his deal. And it is a fact that Holland and Ilitch have made the hard sell to keep him every season since the lockout.