Ange Postecoglou's pre-World Cup cautionary note to Celtic fans forewarned the prospect of waving goodbye to some Parkhead favourites.
But as the January transfer window looms, the Premiership champions could end up with more Qatar ins than outs. Canada right-back Alistair Johnston arrived in Glasgow on Monday after signing a five-year deal to join from CF Montreal, and he could yet be joined by another who caught the eye on the biggest stage of them all. South Korea striker Gue-Sung Cho has emerged as a potential target, and he's seemingly set to make a decision on his future before too long.
The only certainty at this point is the Jeonbuk Hyundai Motors forward has his heart set on cracking Europe, and there's no shortage of interest. Fenerbahce and Ferencvaros have been named as keen suitors, two clubs Celtic will likely feel they can outwit in the market. Cho has asserted his primary consideration for a transfer is simply who can offer him the most playing time, telling South Korean TV: "Rather than dreaming of signing for one specific club, for me, being able to play every week is the most important aspect of any move and that's what will influence me. But I can honestly say there is nothing concrete about a transfer yet. I am still a player of Jeonbuk Hyundai. I also want to go.”