Not exactly why zeman wanted a different keeper, his primary reason was based on his desire for a keeper that can distribute better from the back and build the attack. Steklenberg as a keeper has always been pretty solid that's a very atypical mistake for him

Nope. He started OK but recently he has been pretty shitty and also with the Netherlands.... Very poor and not solid at all.  

He's injured at the moment

I heard that he was back doing full training with the first team

Not yet. He is with the first team, but training separately