Union Berlin updates: Eisernen pick up Oczipka on a free, Marcus Ingvartsen appears headed to Mainz

FC Union Berlin have opted to pick up free-agent lelf-back Bastian Oczipka, automatically released from FC Schalke 04 following relegation last spring. 

German footballing magazine Kicker also reports that Union are preparing to sell Danish attacking midfielder Marcus Ingvartsen to FSV Mainz 05.