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The Bundesliga side go into Wednesday's game at the Allianz Arena on the back of 12-match winning streak. "The ideal result is 6-0, but that will probably not happen," Robben said in the Bild newspaper. "But it is clear we have to score and be careful that Fiorentina don't. "If we win the first game, Fiorentina have to go for it in the second game. That means we would have advantages, because they would have to play offensively to create chances. And that is not Fiorentina's way of playing." Bayern are certainly in scoring form, having netted 20 times in their six games since the winter break. They won 4-1 at Juventus to book their place in the knockout stage, and Robben believes the team are ready to go further. "I think we are ready for the next job," he added. "Everyone is waiting to see what we can bring against an opponent like Fiorentina." Frank Ribery started just his third Bundesliga game of the campaign in the 3-1 win over Borussia Dortmund on Saturday. Robben is glad to have the France winger back, claiming he brings something extra to the side. "It is a lot of fun to play alongside Franck," he said. "Not only for me, also for all the other players. He gives the team something special." Defender Philipp Lahm sounded a note of caution, though, urging the team to improve at the back. "We're not tight enough at the back. We'll be punished for that in the Champions League," Lahm said on the club website. Mario Gomez added: "Jorg's (goalkeeper Hans-Jorg Butt) been sensational recently, but we can't just leave it to him." Butt, 35, has signed a one-year contract extension to keep him at the Allianz Arena until June 2011. Striker Miroslav Klose could return to the Bayern squad following an ankle injury. Fiorentina know they must rediscover the spirit they showed against Liverpool earlier in the season if they want to have any hope of beating the Germans. Cesare Prandelli's side defeated Liverpool twice in the group stages to finish top of the pool but those triumphs are a distant memory with the Viola having lost five of their last six games on the domestic front. "We want to play a great game," said Fiorentina goalkeeper Sebastien Frey. "We want to leave a mark in Europe. "In order to do that, we need to recover the character that we showed in the competition. "I think if we find the spirit that we showed in our two games against Liverpool, we can do well." Little has gone right for Fiorentina in 2010. Viola striker Adrian Mutu was suspended after a failed drug test. On the pitch, last weekend's 2-0 loss at Sampdoria dropped the Viola to 11th in the standings, seven points behind Juventus who hold the last European qualifying spot. "It's a delicate time for us," said Frey. "We have struggled and been unlucky. "But for this type of game, you don't need any extra motivation. "To reach the Champions League last 16 is a bonus, a unique experience for many of my team-mates." Frey believes a goalless result would be a good outcome for his team with the return leg to come in Florence on March 9. "We need to try to avoid giving away goals in Munich," he said. "It will not be easy because Bayern are a great side. "But a goalless result would be a great achievement for us in view of the clash at the Stadio Artemio Franchi." The Viola will be without defender Alessandro Gamberini, who underwent shoulder surgery this week and will be sidelined for three months. Midfielder Mauro Santana is out for three weeks with a muscular injury.
