In the Czech League they have known better days, with nine points from 13 games, and lie sixth.* Key man?The midfielder Lukas Zelenka is the most experienced player He is at the heart of most attacks for Sparta Prague. Tomas Sivok, the 22-year-old defender at the heart of the defence, will be relied upon to halt the runs of Jose Antonio Reyes.* How do you beat them?Prague conceded late goals against FC Thun and Ajax last month. Sparta Prague* How do they beat you?Sparta Prague, who have qualified for the Champions' League group stages for the past three seasons, have a reputation for being difficult opponents The telling battle will be for the midfield. If Prague can dominate then Lukas Zelenka will create time and space to feed the top scorer Miroslav Slepicka.

Stack claimed that his former team-mate Ashley Cole had given him an insight into morale at Highbury, stating "the cliques aren't rumours, it's a fact". Wenger said: "It's a very unfair and unjustified comment by someone who hasn't been part of the first team squad at Arsenal for 24 months."Arsenal (probable 4-4-2): Lehmann; Lauren, Toure, Senderos, Clichy; Fabregas, Flamini, Gilberto, Pires; Reyes, Van Persie.Sparta Prague (probable 4-4-2): Blazek; Pospech, Petras, Petrous, Kadlec; Kisel, Hasek, Zelenka, Polacek; Slepicka, Matusovic.Referee:

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W Stark (Germany).The Lowdown on... But Wenger said: "I hate to put the chances of the team on a cup competition because the real quality is in the championship."Arsenal are in a strong position to progress from Group B victory against a Sparta side in disarray, having sacked their coach and one of their best players, Karel Poborsky, and Wenger believes that his team will need just a point from their final three group matches if they win tonight.Wenger hit back at claims by the former Arsenal goalkeeper Graham Stack that cliques are rife at Highbury, by insisting that squad morale was as strong as ever. He added: "I'm very confident that we have the quality to come back to the top of the table but at the moment I look a bit lonely in that." Is this his greatest challenge? "When you speak of the title then it is a huge challenge now because Chelsea's far [ahead]."It has led to a belief that, maybe, even after all their failures in Europe, the Champions' League may be Arsenal's best hope this season.

"We have our pride and have finished always in the top two," he said of his record as manager. Wenger bridled at suggestions that Tottenham were about to usurp his team as the power in north London, never mind the country "We have eight games gone. "But at the moment I have to accept that we are far from Chelsea." Indeed, it is not just the champions. "Before we come back we have to come back on the other group of teams and then come back at Chelsea."There is more than that at stake. "He's out for 37 or 38 days and still our top goalscorer," Wenger said.