MARVIN COMPPER
Who knows if the dynamic new look of the hair-cropped 33-year-old will deliver on the promise and expectations that his signing created just six months ago.
It started to unravel when he picked up an injury in the winter training camp in Dubai, perhaps Austria will prove to be more favourable?
The players and partnership in central defence is very much open but after managing just 83 minutes of action since his arrival in January Compper has it all to do.
The former RB Liepzig defender turned 33 last week, time looks to be running against him making an impression at Celtic.