Cameron Congreve has caught Kieran Tierney on the head with a high boot.

That looks a real sore one and the left-back's getting treatment.

Rory Loy
Former Dundee striker on BBC Sportsound

Dhanda, for me, has probably been the standout for Dundee. His composure, buying space.

Pat Bonner
Former Celtic goalkeeper on BBC Sportsound

Celtic are just struggling to create real chances. They've had loads of possession but it's been in front of Dundee.

Liam Scales fails to thread a pass through then swipes a wild effort so far wide it almost goes out for a throw.

Martin O'Neill is fuming. He's losing his patience with the officials.

Dundee's work rate...

Unbelievable. Celtic just can't get room in the final third.

Brad Halliday's just made another excellent tackle then won a foul.

Michael Stewart
Former Scotland midfielder on Premier Sports

The game's gotten a little bit lethargic for Celtic at the top end of the pitch.

Plenty of Celtic fans heading for the exits with this tie in the balance.

Strange.

Dundee also make another switch.

Tony Yogane is off for Fin Robertson.

Another Celtic debut, Tomas Cvancara off for Junior Adamu.

Can he save this tie for Martin O'Neill?

Dundee's last win at Celtic Park? 2001.

They're about 15 minutes away from booting that stat into the Glasgow sky.

Image source, SNS

Dundee inches away from a second!

Tony Yogane races on to a loose ball in the Celtic box, but his strike is blocked on the line and Viljami Sinisalo gathers.

James Forrest thinks Drey Wright has bought a free-kick deep in his half and the home fans agree.

The linesman waves his flag, though, and Dundee get another breather.

Dundee turn to their bench too, bringing on former Rangers winger Scott Wright and Callum Jones for Simon Murray and Joel Cotterill.

Kieran Tierney is back up to whip a poor cross straight out.

Here come more Celtic changes, Luke McCowan and Sebastian Tounekti replacing Reo Hatate and Yang Hyun-jun.

Starting to see the yellow card quite a bit now as Simon Murray swipes Kieran Tierney late.

The left-back needs treatment but he's back up.

Image source, SNS

Yan Dhana's delivery has too much on it and Ethan Hamilton is at too tight an angle when he heads it wide.

Julian Araujo is into the book for tripping Tony Yogane, who is just too quick and too powerful for him.

Free-kick for Dundee wide on the left.

Celtic are ramping up the pressure, but Dundee make two crucial blocks to deny Kieran Tierney and Tomas Cvancara.

James Forrest drops a shoulder but drags wide from the edge of the Dundee box.