Hmmm...
A quick search of the Fifa Manager forums (once I got the damn thing to work properly in English) seems to indicate that the only way to play the matches will be with a variant of the Fifa 10 PC engine, whether you have Fifa 11 or not - if you don't have Fifa 11, you have to pay for it to be unlocked, but either way it'll be the same engine. So, someone's wrong - either them or Outsider - who is it? Have you actually played a Fifa 11 PC game in Fifa Manager 11, Outsider? Everyone on the official forum, including the moderators say that it won't be possible to play the matches in Fifa 11's engine.
Remember your original post, Outsider?
What a letdown.
Or is it...
Maybe once the game is out, you can clarify it, Outsider? I know you're not really allowed to give out information on games you've seen in advance.