Konko is likely to still be out after going off early against Pescara so Pereirinha will get his first start at right-back.
Mauri and Brocchi are also unavailable, so the midfield will be unchanged from the last match.
Floccari will be the lone striker, as Petkovic will probably avoid fielding two forwards from the start.
Milan have had to catch their breath after chasing the third spot following a poor start to the season, and failed to beat Inter despite creating a lot of goalscoring chances last week. The calendar is now favourable for the Rossoneri as they have had time to rest this week and will be able to play this crucial match at home.
Lazio went through in the Europa League and also picked up two points on both Milan and Inter last week. This small margin could allow Petkovic's team to travel to San Siro hoping for a draw and to keep fighting in both competitions, but a win here would be superb.
The visitors struggled in the league before beating Pescara last week, and may be using up all of their strength to cope with some absences. Milan have finally had an entire week to rest and prepare for this match, and the depth of their squad could make the difference in the end. Petkovic will try to control the match to avoid too much energy being drained from his players, but Milan may try to press hard from the start and hope Balotelli will have a better night than the derby.
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