WEST BROM'S James Morrison will celebrate his 27th cap by skippering Scotland for the first time in tomorrow night's World Cup qualifier against Croatia in Zagreb.

The midfielder is set to become the first English-born player to lead Scotland since Bruce Rioch against Holland at the 1978 World Cup.

Darren Fletcher, Gary Caldwell, Scott Brown and Kenny Miller would all normally have been ahead of him in the list of probable skippers but they are absent from this trip.

"James has been an excellent Scotland player over a number of years now," said manager Gordon Strachan last night.

"He thoroughly deserves this recognition and honour after a terrific season for West Brom and Scotland."

And the task facing Morrison and Co looks a daunting one. Another defender was lost from the heavily-depleted Scotland squad – Gordon Greer became the seventh player to withdraw from the original group – which flew into the Croatian capital yesterday afternoon.

Greer had the desperate disappointment of having to pull out having been given his first senior call-up at the age of 32.

Brighton & Hove Albion's medical staff had assured Scotland he would be fine to play after recent knee surgery but there was swelling when he trained this week and he was advised to withdraw.

"Gordon is gutted," said assistant boss Mark McGhee. "He was desperate for the opportunity. We can't do anything about it, it's done."

Greer reluctantly joined Brown, Gary Caldwell, James Forrest, Danny Fox, Lee Wallace and Liam Bridcutt by falling out of the squad originally picked by Strachan.

Norwich City's Russell Martin, who normally plays at right-back at club level, and Andy Webster are the likely central defensive partnership for Scotland, with Grant Hanley the only other recognised centre-half in the squad.

Croatia and Belgium are joint leaders of Group A, on 16 points to Scotland's two – and Scotland expect a tough night in Zagreb.

"Gordon has not defined exactly how we will set off in terms of attack," said McGhee.

"We have spoken more about how we contain the onslaught that we expect from them early on. But that requires us to hit the other way. It requires us to punch back. We can't just keep taking punches because eventually against opposition like this you'll take a knockout punch.

"We know what to expect and we have worked on ways both physically, with our shape, and also mentally.

"We have tried to persuade the players that even with that onslaught they have to be prepared to stay calm and pass the ball and work their way out, and then we do have people who can go in the other direction.

"It's about striking that balance between the two [defending and counter-attacking] and we've worked hard to achieve that this week.

"We feel content that – on paper and on the training ground – we have an opportunity to do that and now we've got to go there and do the job."

Scotland were fortunate to lose only 2-0 against Belgium in Brussels in October, and Croatia in Zagreb are just as formidable.

"I think they are just as strong," said McGhee. "They are different slightly.

"Technically, Belgium play a more sophisticated game. I think Croatia show the best of British elements: they are strong physically, tactically they are very solid, and they are consistent in their team selection.

"They have a big centre forward and then a smaller forward, whether it is Eduardo or whoever, playing off him. They have midfield players who can pass it and they have midfield players who can defend, they have full backs who can go forward, and they have centre-halves who are big, strong and quick. They have a decent goalie. They have great balance in the team."

McGhee was unconcerned by the reported cockiness of Croatia manager Igor Stimac and striker Ivica Olic about their probable victory tomorrow. "I think they have back-peddled. We are not going to take offence. We know they are a good side and will come at us full pelt; we have to be prepared for that. Given their record, they are quite entitled to believe they can beat us. We have to prove them wrong."

Hanley has trained normally again after a minor ankle injury and Shaun Maloney is also fine after a slight worry earlier in the week.