Germany International has been left out of the squad for six out of the Blues’ seven games this season.
“I’ve had discussions. Sometimes players are out of the squad but he is very much in contention,” said Lampard.
Former Roma defender Rudiger has not played for Chelsea this season, although he has started all five of Germany’s matches this year.
Defender Silva has been rested for Wednesday’s game, while Lampard is without injured goalkeeper Kepa and suspended defender Alonso.
Chelsea drew their group opener 0-0 against Sevilla last week, and have not won in the past three games.
“People look at this group and think it is comfortable for us, but we have to have edge against Krasnodar,” said Lampard.
“They are new into the Champions League so will have absolute motivation. We’re very focused on the game.”
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