How does this sentence work?
It contains the expression a nu avea cum + conjunctive, meaning "be unable to".
I heard that is an especially strong form of being unable to do something and would therefore e.g. often be used by children saying they couldn't do their homework for some reason, thus stressing it was really not their fault. :)
Why can you not have 'eu' after deoarece please?
You could but it's not necessary.