Dave de Vos
That would be a wonderful opportunity indeed, but I read that it is for advanced students and teachers only (I understand that this is usually the case with Dan Harden's seminars). I just started training aikido four months ago, so I don't qualify at all.
mike sigman also has a workshop in europe if you can get to http://www.aikiweb.com/forums/showthread.php?t=18499
or looking up this teacher, wang hai jun, if you can get to some of his workshops. if you get to his workshops, ask for two things: standing exercise and silk reeling.
i believed akuzawa of aunkai also give workshops in europe.
one thing, maybe two, about internal training. you need to acquire a certain attitude of persistent and perseverance. the statement "I just started training aikido four months ago, so I don't qualify at all" is a non-persistent statement. you ping dan and ask "can i come? can i come, please? pretty please? i'll buy you beers, dinner and whatever, if you let me come" and so on and so forth. be a persistent SOB. that sort of attitude is needed for doing solo exercises.