Matt Giteau will start a Test at halfback and winger Mark Gerrard will be trialled at flyhalf in the boldest experiments of the Wallaby tour of Europe in November.

The mystery surrounding yesterday's announcement of the 37-man squad revolved as much around where certain players would play as in the actual names.

WALLABIES SQUAD: Stirling Mortlock (capt), Adam Ashley-Cooper, Al Baxter, Rodney Blake, Alister Campbell, Brendan Cannon, Mark Chisholm, Sam Cordingley, Rocky Elsom, Gene Fairbanks, Mark Gerrard, Matt Giteau, Stephen Hoiles, Greg Holmes, James Horwill, Stephen Larkham, Chris Latham, David Lyons, Tai McIsaac, Hugh McMeniman, Drew Mitchell, Stephen Moore, Wycliff Palu, Tatafu Polota-Nau, Clyde Rathbone, Benn Robinson, Mat Rogers, Nathan Sharpe, Brett Sheehan, Cameron Shepherd, Guy Shepherdson, George Smith, Scott Staniforth, Lote Tuqiri, Morgan Turinui, Dan Vickerman, Phil Waugh.

Just how to best utilise the quicksilver skills of Giteau is one of coach John Connolly's top priorities on the seven-game tour.

The neat-stepping spark produced one of the best individual displays of the Wallaby season at inside centre with his two-try heroics against South Africa in Brisbane in July.

With regular Test halfback George Gregan opting to rest from the tour, the classy Giteau's versatility will be tested to the limit.

"Gits will be part of our World Cup side next year. It's for us to explore just where so he'll play time at halfback, flyhalf and inside centre," Connolly said.

"It's likely he'll play a Test at halfback, there's no doubt.

"We want to see if he's up to it and that's why we're taking just the two specialist halfbacks (Sam Cordingley and Brett Sheehan)."

Gregan's personal view that moving Giteau into No. 9 won't give him the "time and space to be as electric as he is" at inside centre is the question that Connolly needs answered.

Giteau has not played at halfback since his under-21 days in 2002 and a second-half cameo against Romania during the 2003 World Cup.

Cordingley can make the Giteau trial all but redundant with a big tour now he feels he has beaten a foot ligament injury.

"George said it's a whole new ball game for Wallaby spots when Super 14 comes around but I'd like to leave a lasting impression with how I play on this tour," Cordingley said.

Connolly said centre Tune was not out of the picture for 2007.

"He needs a good off-season to get some niggling injuries right and a good Super 14 so we've decided to give him a break and not take him," Connolly said.

Connolly said earning a Test debut should be the target for the 115kg Horwill, 21, one of seven Queensland Reds picked to tour under captain Stirling Mortlock.

"Horwill is a big man and abrasive," Connolly said.

"He's been targeted for the midweek games but if he plays well the last couple of Tests are there for him."

Hooker Brendan Cannon and No. 8 David Lyons, both 40-Test stalwarts, are in after comebacks from injury in the Australian Provincial Championship.

Connolly said backrower Stephen Hoiles and Moore played their way into the squad with strong showings in the APC.

"After a disappointing Super 14 I was determined to work really hard and make something of my season, not let things go downhill," a delighted Moore said.

Added Connolly: "It's a big tour for Moore.

"He can breach the defence with his running and his lineout throwing was much more consistent in the APC.

"His scrummaging will get the chance to improve on tour where developing depth in the front-row is an important aim with five props and four hookers going away."  (couriemail)