IT'S been another busy week of World Cup qualifying and 23 teams have now booked their places in Russia next summer.

That leaves nine more spots to be filled in November as play-offs take place across the world for the right to appear in the 2018 World Cup.

But which Clarets have booked their places in the World Cup? And who still has work to do. We break it all down here.

Steven Defour (Belgium)

The Red Devils were the first European nation to qualify for the World Cup, doing so on September 3 as winners of Group H.

That should mean Defour is on the plane to Russia as his international career benefits from his Turf Moor renaissance.

Lancashire Telegraph:

The 29-year-old former Standard Liege and Anderlecht midfielder doesn't feature often under Roberto Martinez these days, but he has been in the last two Belgium squads for their final World Cup qualifiers.

If Defour can maintain his early season Premier League form for the Clarets then he should be on the plane, with his 51 caps adding experience to a Belgian side who could go far next summer.

Johann Berg Gudmundsson (Iceland)

Barring injury Gudmundsson is certain of a place on Iceland's plane to Russia as he continues to emerge as one of their most important players.

It's been another incredible qualifying campaign for Iceland, who have followed up their exploits at Euro 2016 by booking an appearance at the World Cup for the first time.

They will become the smallest country ever to play in a World Cup finals, and by some distance, and Gudmundsson played a big part in getting them there.

The Clarets winger got the ball rolling with the first goal in the 3-0 win in Turkey last Friday which sent Iceland top of Group I, and he scored the second goal in the win over Kosovo in Reykjavik that sparked joyous scenes of celebration.

Tom Heaton (England)

A little less certainty over this one. England have booked their place in Russia, but will Burnley captain Heaton be part of Gareth Southgate's 23-man squad?

Lancashire Telegraph:

The 31-year-old had been included in every Southgate squad until the cruelly timed dislocated shoulder he picked up in the Clarets 1-0 win over Crystal Palace last month.

He now faces several months on the sidelines, but should have enough time once he returns to catch the eye again.

But competition for goalkeeping spots in the Three Lions squad are fierce, and the third 'keeper position could come down to a straight shootout between Heaton and Jordan Pickford.

Kevin Long, Stephen Ward, Jeff Hendrick, Robbie Brady, Jon Walters (Republic of Ireland)

Burnley could have five players in Ireland's 23-man World Cup squad, if Martin O'Neill's men can secure qualification in next month's two-legged play-off.

They will face either Switzerland, Italy, Croatia or Denmark in November, with the draw to be made on Tuesday.

Lancashire Telegraph:

If Ireland can secure a World Cup berth then the Clarets should be well represented.

Ward, Hendrick and Brady should be guaranteed of a spot, while Walters should also be present as he looks to shake off a recurring knee injury and play himself into fitness. Long could also be a presence as he continues to impress O'Neill and Roy Keane.

Chris Wood (New Zealand)

There is still hope for Wood and the All Whites to qualify for their second ever World Cup, and the finale of South American qualifying has been fairly kind to them.

As expected New Zealand cruised through the Oceania stage, in part thanks to a Wood hat-trick in the play-off with the Solomon Islands, to qualify for the Intercontinental Play-Off in November against the side finishing fifth in South America.

That could have been Argentina or Chile, but instead they will face Peru, who secured fifth place on Tuesday night in a dramatic conclusion to CONMEBOL qualifying.

That could give Wood, who has plundered 24 goals in 54 games for his country, a chance of making it to Russia next summer.