The German politician returned from the meeting with a letter from Snowden addressed to German chancellor Angela Merkel, which will be read out in public this afternoon.
Ströbele warned Snowden would likely face legal complications if he were to travel to Germany from Russia, where he has been granted asylum after leaking documents on mass surveillance by the NSA.
If Snowden were to travel to Berlin, he would be able to apply for asylum in Germany. In June his application for asylum in the country was rejected because he was required to apply in person inside Germany.
Snowden could be granted a residence permit in Germany under paragraph 22 of German residence law, which allows a permit to be granted "if the interior ministry declares it to be in Germany's political interest".