EDIT: Reply directed at ojlopez
While I wouldn't quite word it like that, I think Alonso's priorities have shifted. He's not the youngest F1 driver any more, and his career has stagnated to a degree with no realistic lookout for a further WDC. I firmly believe that for him, getting himself into a competitive car is his highest priority, all else being secondary. If Rosberg were to pack his bag and leave Mercedes, I'm willing to bet good money that Alonso would be right there begging for his seat along side Hamilton, despite whatever history they may have had in 2007. Given that a Mercedes seat is unavailable to him, the lookout to join a hungry team such as McLaren and the prospect of Honda doing a miracle job on the PU front... I think the team-mate question is rather unimportant. No, again, I don't see him concerned over who else joins him at McLaren at all. At least not if the choice is between Button or Kevin.