Celtic star Carl Starfelt made a 'hush-hush' trip to visit a specialist in London over his knee injury on Tuesday, according to a report.
The Swede has been out with the issue for over a month with Ange Postecoglou's men using the trip to Germany to face RB Leipzig as a chance to get a more detailed timescale for getting the former Rubin Kazan man back on the pitch. The Hoops hoped he could make his long-awaited return to action within the next two-three weeks - but if the specialist's report isn't positive he could face an extended period on the sidelines report the Scottish Sun.
Starfelt has established himself as a first choice under the Aussie boss Postecoglou since his arrival last season and has formed a solid partnership with Cameron Carter-Vickers. The duo played a key role in the league and cup double success last term but so far have been unable to form that same bond due to injuries.