Former Celtic loanee Moritz Jenz admits he endured a "difficult" spell at Parkhead before his spell was cut short and he was sent to Schalke.
The German defender spent the first half of the season on-loan in the Scottish Premiership from Lorient but his time in Glasgow's east end was cut short with game time dwindling for the 23-year-old. The deal was meant to be for the season, with and option to buy, and after a bright start and featuring in the Champions League group stage Ange Postecoglou appeared to be keen on Jenz.
However, the return of Carl Starfelt from injury to partner Cameron Carter-Vickers at centre-back saw first-team chances limited, with his final Celtic appearance coming back in November when he limped off in the victory over Ross County. The January arrival of centre-back Yuki Kobayashi proved to the final straw for Jenz and his time at Celtic, and he was swiftly moved to the Bundesliga side after his return to France.