He did train today and he is expected to be fit for Saturday according to the Daily Heil.
No real facts surrounding the 'club versus country' thing that the papers are stirring up. We don't really know what was said or how fit Wilshere was, but if Arsenal didn't want him to play, Arsenal can't pull him out but Wilshere could've pulled out himself complaining about some pain in his ankle or the flu or whatever excuses Ramsey and the others were using.