Martin O’Neill's Positive Update on Kieran Tierney's Return
Kieran Tierney will not be risked against St Mirren on Saturday, but Martin O’Neill has handed Celtic supporters the update they wanted to hear: their key defender is ahead of schedule and closing in on a return.
Speaking at his Friday press conference, O’Neill revealed the 29-year-old is progressing faster than first feared after his recent setback and that the original lay-off estimate has already been revised.
“Yeah, so, Kieran is doing fine at this minute. Really fine,” O’Neill said. “I thought that he might be a wee bit longer, and he’s doing fine.”
The good news stops short of an instant comeback. Asked if Tierney or Kasper Høgh could feature this weekend, O’Neill was blunt.
“I would have thought it very, very unlikely for both of them.”
The message is clear: Paisley is a step too far, but the wait should not drag on. If Tierney comes through the next block of training without any reaction, O’Neill expects him to be available either in midweek or in the following fixture. For a player whose absence was initially expected to stretch out, that shift in timeline is significant.
Why Tierney’s return matters
Celtic have coped without him, but they have not quite looked the same.
Tierney gives O’Neill’s side something no one else in the squad truly replicates: natural width from deep, relentless overlapping runs and the recovery speed to bail out a high line when attacks break down. In O’Neill’s aggressive pressing system, the full-backs are asked to constantly reshape the back line, with one stepping high while the other tucks in to create a back three. Tierney thrives in that chaos.
He can carry the ball into open grass, drag markers towards the touchline and clear the inside lane for the left winger to drift infield. When he is missing, Liam Scales and others can fill the shirt, but the balance shifts. The left side loses some of its rhythm going forward and looks more vulnerable when possession flips the other way.
His numbers back up the eye test. A reported 4.2 successful tackles per 90 minutes last season underline how often he wins the ball back, a crucial trait for a side that lives on the front foot and leaves space behind.
Celtic do not just regain a defender when Tierney returns. They regain a platform.
Depth buys time – and creates dilemmas
O’Neill’s summer rebuild has given him the one luxury managers crave in a crowded season: options.
Five loan signings arrived in the frantic final 48 hours of the window, swelling a squad that must now navigate a domestic campaign and a European schedule. That extra depth allows Celtic to resist the temptation to rush Tierney or Høgh back just because the fixtures keep stacking up.
There is a cost to that strength. O’Neill has already had to confront UEFA’s strict registration rules, with three young players left out of the Europa League squad to make room for senior options. It is an awkward trade-off, but one that underlines how competitive the environment has become.
Tierney’s impending return only sharpens that picture on the left. His pace, delivery and constant willingness to attack give Celtic a way to be bold without leaving their centre-backs exposed, a blend O’Neill has been searching for as he beds in his pressing structure.
For now, St Mirren will see a Celtic side still without one of its on-field leaders. The difference this time is the mood music around his recovery. The conversation has moved from weeks to days.
With Høgh also short of full availability, the next stretch of games will reveal whether this deeper squad can carry Celtic until their first-choice left-back is sprinting down that touchline again.
