Andy Walker, a former Celtic favourite from his playing days, concedes that Virgial van Dijk is destined to depart for pastures new at some stage in the near future.
It could be that he moves on in January, with talk of interest from the Premier League growing in intensity.
The likes of Arsenal, Tottenham Hotspur and Manchester United have all been heavily linked with an approach for the classy Dutch centre-half.
He would demand a sizeable fee, but that is unlikely to deter those desperately seeking the final piece in their defensive jigsaw.
Is Van Dijk ready to take such a step up in class, though?
Walker admits that he is one of the finest performers at Parkhead, but he is also aware that the 23-year-old has come a long way in a short space of time – with it only 18 months ago that he was swapping life in the Eredivisie with Groningen for that in Glasgow with Celtic.
“Their big player, Virgil van Dijk, there is talk of him possibly going,” Walker told Sky Sports News on a player reported to now be valued at around £10 million.
“I don’t know if he’s good enough to go to the likes of Arsenal or Tottenham but certainly if he doesn’t go in the January transfer window, the likelihood is that he will go in the summer window.
“That, I think, has to be a real worry for Celtic, who want to get back into the Champions League and establish themselves again as a Champions League club.”
This has been part of the problem for Celtic in recent years.
They unearth hidden gems, dust them down and polish them up, only to then see them lured south of the border by the footballing riches on offer in England.
It would appear to be only a matter of time before Van Dijk treads a similar path, with it difficult to see how Ronny Deila will be able to keep such a sought-after commodity out of the clutches of a rival once the formal offers start to roll in.