Celtic journalist Kieran Devlin has expressed uncertainty about the return date of centre-back Christopher Jullien. 

The lowdown

The Frenchman hasn't played for the Hoops since their 3-0 win over Dundee United at the end of December 2020. He was forced off in that game after injuring his knee when colliding with the post (via BBC Sport).

Former Scotland boss Alex McLeish has said it will be a 'massive' boost for Celtic whenever Jullien, a treble winner in 2019/20, eventually makes his comeback.

Ange Postecoglou said in late October that the 28-year-old would be back after the November international break, but there's no sign of him as yet.

The latest

In The Athletic's matchday discussion surrounding Thursday night's Europa League clash with Bayer Leverkusen, a supporter asked Devlin if there was 'any indication when/if' the defender would be back.

The fan 'thought by now we would have seen something of Jullien in training' or in a youth team game.

Devlin replied: "It just keeps being pushed back. Briefed multiple times this season that he'd be back within a few weeks and it just hasn't happened. Not sure what the new estimated date is."

The verdict

Celtic initially expected to be without Jullien for a period of four months, but we're now approaching a full calendar year of him being sidelined.

Devlin's latest claim is worrying because it suggests that there may have been a setback, with the 28-year-old not able to meet the club's revised timeline.

They were knocked out of the Europa League this week after a 3-2 defeat by Bayer Leverkusen, with Chris Sutton acknowledging that 'defensively, Celtic have come up well short in Europe'.

It's tempting to wonder whether they would have had enough to progress from their group with a fully fit Jullien, who was included in their squad for the competition - a sure sign that the Hoops had banked on him returning to action by now.

In other news, this defender is open to signing for Celtic