Petkovic will be without at least two players from his typical line-up as Klose and Gonzalez are both injured.
Therefore, Candreva will play on the right flank, while the match-winner against Atalanta, Floccari is going to be the lone striker.
Konko has not trained due to a minor problem and his presence is now doubtful.
Palermo have only collected one point in their last 6 league matches, and manager Gasperini has openly asked for more reinforcements. In the meantime his job could also be considered at risk, so obtaining points at home is mandatory to retain his position.
Lazio have won all of their last four matches (six including the Coppa Italia) and are unbeaten since the 4th of November. Morale is high and having the chance to play before Juventus could give Petkovic's team an extra boost.
The hosts are struggling to get points and now the relegation zone is only four points away. Lazio have proven to be solid both at home and away, but as Palermo have been the worst team so far in away matches, the hosts must win to avoid being dragged further down the table. Lazio's manager will know how desperate the home side will be and may prepare a patient, counter-attack based match.
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