A wee pep talk from wee Fran, and we're ready to go again...

And there is the full-time whistle.

No goals in that second half despite a host of chances, and there will be another 30 minutes in Oslo.

Kelsey Daugherty has been immense in goals for Celtic, and should this tie go to penalties, Fran Alonso's side may well need her to stand up again.

Jenny Smith shoots from miles out, and that's easy for Guro Pettersen in the Valerenga goal.

We're heading for extra time troops - settle in.

Kelsey Daugherty comes to Celtic's rescue again!

Paula Partido is caught dallying on the ball, and Karina Saevik is played clean through.

She shoots from inside the area, but Daugherty turns the shot round the post for a corner.

There will be six minutes added on.

Can Celtic find a winner, or are we set for extra time?

Caitlin Hayes does her best Lionel Messi impersonation, and dances away from several Valerenga challenges.

That could have spelled real trouble for Celtic, but Hayes dealt with it superbly.

There's some very tired legs out there now.

Tiree Burchill goes down in the box, and has a case for a penalty, but the referee is having none of it.

Jenny Smith lashes one over the top from miles out.

Eight minutes left of regulation time.

How have Celtic not gone in front?!?

A chipped ball into the middle from Shen Menglu is met by Caitlin Hayes at the far post, and her header back across goal just needs someone to tap it home.

Valerenga get there first though, and the hosts just about survive.

As we enter the last 15 minutes of this game, just a wee reminder that we will go to extra time and then penalties if it stays level...

There's been a few Celtic players in the wars this evening, and Kit Loferski is the latest to need treatment.

Shen Menglu replaced Natalie Ross a couple of minutes ago, and we may well get another change here.

And Loferski is taken off - Paula Partido is on in her place.

Kelsey Daugherty, that is brilliant goalkeeping!

Karina Saevik races onto a cut-back from the right, and strikes it cleanly towards goal.

The Valerenga forward is wheeling away in celebration, but Daugherty gets down sharply to her right, and holds on to stop Saevik putting in the rebound.

If Celtic do go through tonight, they will have their goalkeeper to thank.

Mimmi Lofwenius cynically takes out Caitlin Hayes, and is booked.

The resulting free-kick is poor, and easily claimed by Guro Pettersen.

Shen's delivery sails out on the full, which is a real waste.

Celtic win a corner down the right.

Caitlin Hayes and Kelly Clark head forward from the back.

Inches away from Valerenga retaking the lead.

It's a good ball in from the right, Olaug Tvedten throws herself at it, but can't quite make the necessary contact.

Anything on that, and it would have been 2-1 to the hosts.

Celtic deal with the corner, and turn defence into attack in the blink of an eye.

Colette Cavanagh plays Tiree Burchill in behind, and the substitute finds the back of the net, but the flag had already been raised.

Celtic have struggled to keep hold of the ball in the opening stages of this second half.

Valerenga force a corner after nicking the ball back in Celtic's half.

We are back under way in Oslo...

That is that for the first 45 in Oslo.

It's been pretty breathless stuff, and there could have easily been more goals for both sides.

Valerenga took an early lead, as the impressive Olaug Tvedten fired home from long range, but Kit Loferski hit back immediately for Celtic.

The hosts have probably just edged it, but Celtic have shown that they can hurt the Norwegian side when they get on the ball.