Despite remaining unbeaten in the Scottish Premiership, sections of the Celtic support have questioned the club's signing policy.
The strategy in place has proved fruitful over the last few years: buy young, talented players from somewhat unfashionable leagues, develop them in the first-team and provide them with European experience, before selling them on for a profit.
It worked to perfection during the summer transfer window, particularly with the sale of Victor Wanyama to Southampton. Plucked from Belgian side Beerschot for just £900,000 in July 2011, he departed two years later for a record £12 million fee.
Nevertheless, since their lacklustre campaign in this season's Champions League, Hoops fans have questioned whether the ratio of saving to spending off the back of the current transfer strategy is correct.
Included in that debate is the lack of signings Celtic make from inside Scotland—the summer 2010 procurements of Anthony Stokes from Hibernian and Charlie Mulgrew from Aberdeen being the last time the club looked domestically for reinforcements.
Here, we take a look at five Scotland-based players Celtic could look at in January, with the positions of left-back, left wing and striker of particular interest.