St Johnstone captain Kyle Cameron is down with what looks like a hamstring injury, so we've got something of a delay.

Allan Preston
Former Dundee United defender on BBC Sportsound

It’s accidental but he runs into him. He runs in and takes him out at the far post. But that’s exactly what VAR’s for - it’s a great spot.

St Johnstone get off the hook.

Amy Canavan
BBC Scotland at McDiarmid Park

John Kennedy ain't happy with the decision.

The Celtic assistant is away shaking his head after burning the lug of fourth official Colin Whyte.

Auston Trusty absolutely clatters Graham Carey off the ball in the build-up, and the goal is chalked off.

Kyogo's gets across his marker once more, but can't generate any power on his shot and Ross Sinclair makes a simple save.

Celtic are just turning the screw now.

Pat Bonner
Former Celtic goalkeeper on BBC Sportsound

It’s that little run from Kyogo off the centre-back’s shoulder.

Kuhn should have done a little bit better as the ball bounced up nicely for him.

Kyogo's movement gets him so many goals, and he ghosts in behind again here.

Ross Sinclair makes a sharp save, but can only palm it straight to Nicolas Kuhn.

The German winger has the goal at his mercy, but slices his effort well wide.

Should have done better...

Saints win a free-kick in Celtic's half and now have a rare chance to get the ball into the opposition box.

Celtic clear, but the hosts come again and win a corner. There's a muted penalty appeal as the ball strikes Alistair Johnston's hand, but nothing doing.

A decent spell this for St Johnstone.

A wonderful ball into the box from Alistair Johnston finds Kyogo unmarked in the box, but the hosts scramble back just in time and block the shot.

You sense there's going to be plenty more last-ditch defending needed in this game.

Nicolas Kuhn swings a cross into the St Johnstone box, but Lewis Neilson puts it behind for another Celtic corner.

The home defence deal with it well and are able to push out a wee bit.

Amy Canavan
BBC Scotland at McDiarmid Park

Celtic fans to the left of me, Celtic fans to the right, here I am stuck in the middle... you know the tune.

The noise in here is deafening, it's like a wee cave, just echoing around.

The odd St Johnstone fan on the far side will barely be able to hear themselves think.

Allan Preston
Former St Johnstone defender on BBC Sportsound

St Johnstone have got to get out if they can. They’re just getting hemmed in even this early.

Kyogo thinks he's going to have a tap in after a clever Callum McGregor pass finds Daizen Maeda in behind.

Maeda tries to square it for his international teammate, but home keeper Ross Sinclair reads it and clings on.

Maeda was offside in any case.

Image source, SNS

Celtic dominating possession - as you'd expect - in the early stages.

St Johnstone skipper Kyle Cameron concedes a corner after Nicolas Kuhn releases Alistair Johnston down the right.

Away we go in Perth...

Image source, SNS

The players are out at McDiarmid Park.

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Just click the link at the top of this page, or tune in via BBC Sounds - whatever you prefer.

Celtic have won 14 successive games, including all eight of their fixtures this season, and have won 13 in a row at McDiarmid Park since a 2-1 defeat in May 2016 - scoring 49 goals for the loss of only nine.

With St Johnstone's struggles this season, everything points to an away win.

It's a funny old game though.

Image source, SNS

St Johnstone interim manager Andy Kirk tells BBC Scotland: "You just concentrate on the daily task, which is getting the players right for the game.

"That's the best way to do it, is just to dive in. That's worked this week, it's kept the players focused and they've trained well.

"It's a difficult task because Celtic are an excellent team. We need to be at the top of our game, fully focused and hope Celtic have a bit of an off day.

"In terms of my own position, it's not a conversation I've had with the club. I'm fully focused on what I'm doing at the minute, what comes after that, I don't know."

Celtic manager Brendan Rodgers has been talking to BBC Scotland, and starts with today's later kick-off time: "That extra wee bit of recovery would have been helpful, but we won't cry too much about it.

"The world is probably looking at the Dortmund game, but for me it's important tonight to keep the process going and how we've been playing.

"We're a different team now with a different mindset, but last year here in the first half we weren't too good.

"Let's put in a Champions League performance this evening and then take that into the game on Tuesday."

Image source, SNS