hi!
..info is available under
www.lft.de Reading through them it does state that all EU citizens are legible for the school as well as for the LH sponsorship. I'd drop them a line and specifically refer to the cadetship programme..
The problem is that the test aren't done by Lufthansa, the DLR (Deutsche Gesellschaft für Luft- und Raumfahrt) does the tests in their name. The first test which determines the applicants general aptitude for maths, physics etc. shouldn't be too great a challenge for non-germanspeakers. But the second test marathon is quite centered around communication skills, argumentation and group interaction. You'll need to be able to lead an argument (...discussion!) in german.
On the other hand, a few years ago LH even employed Spanish, when they were tight on pilots... They couldn't speak a word of german...
Good Luck!