STAR German import Thomas Broich is set to be retained in the "false No.9" role even if gun striker Besart Berisha is recalled to Brisbane Roar's starting side for Saturday's clash against Adelaide United at Suncorp Stadium.

Fit again after missing the first-placed Roar's past two matches with a hip injury, Berisha trained strongly at Ballymore on Thursday.

Roar coach Mike Mulvey tinkered with his main line-up in a training match, with Berisha and veteran left fullback Shane Stefanutto, available after 10 weeks out with a hamstring problem, alternating with Henrique and Diogo Ferreira in the preferred XI.

While Ferreira is expected to start at left back ahead of Stefanutto following his excellent display in the Roar's 3-0 last-start win over Melbourne Victory, whether Berisha displaces Brazilian speedster Henrique is yet to be decided.

But such has been the successful switch of Broich to the central attacking role, Berisha isn't likely to be used in his usual centre-forward position should he start.

News_Rich_Media: Ivan Franjic believes Brisbane Roar were always going to be sitting at the top of the A-League ladder and they have no intentions of slowing down this weekend.

Instead, the A-League's best striker is set to start on the left side of attack. Mulvey insisted it would not be a repeat of Berisha's temporary move to the left wing last season in Brisbane's 3-2 loss to Melbourne Heart at AAMI Park.

The Roar coach took the blame for the defeat, with the Albanian international struggling out wide before being restored to his usual spot in the centre of attack, after which he scored both of Brisbane's goals.

Under the Roar's current system of play, Berisha will be able to drift into the centre of Brisbane's attacking line tomorrow and form a lethal combination with Broich, the centrepiece of their superb attacking displays in their past two matches, including the 5-2 Boxing Day thrashing of Sydney FC at Allianz Stadium.

"We've scored eight goals without Berisha there and he's the best striker in the league by far," the Roar's Socceroo fullback Ivan Franjic said.

"It's scary. We don't even know if he's going to start this week, which is even scarier.

News_Rich_Media: An in form Brisbane Roar welcome an injured Adelaide United to Suncorp Stadium in the first of two matches this Saturday.

"Bes is a goalscorer and I'm sure if he comes off the bench or if he starts he'll be scoring this week."

As revealed in The Courier-Mail last month, in-form Roar attacker Dimitri Petratos has extended his Brisbane contract.

The Roar yesterday confirmed the former Sydney FC forward had signed a new two-year deal with Brisbane.

"When I joined the club, my focus was on getting game time but I knew I would have to work hard," said 21-year-old Petratos, who has scored four goals in his past two matches.

"I feel like I've grown as a player since coming to Brisbane so I hope I can keep doing that."

Mulvey said Petratos had been rewarded for his hard work on and off the field.

"I've been impressed with his attitude since joining us," the Roar coach said.

"Dimi understood he needed to be patient. I can see he's continually pushing himself to perform and improve as a Brisbane Roar player."