Moritz Jenz has revealed he misses playing at Parkhead after the former Celtic defender made his debut in the Bundesliga for struggling Schalke.
And he admitted he had to quit Scotland because of a lack of playing time under Ange Postecoglou.
The German defender made 19 appearances for Celtic this season after signing on loan from French club Lorient, but the deal was cut short after he wasn't in Celtic's plans after the World Cup break.