In 2010, Novak was in training camp with the Chargers. He spent training camp with the New York Jets before this season.
Kaeding suffered torn ligaments in his knee in the Chargers' season-opening victory over the Vikings.
Kaeding was hurt trying to tackle Minnesota's Percy Harvin, who returned the opening kickoff 103 yards for a touchdown on Sunday.
"He planted and he kind of got spread out," coach Norv Turner said Monday. "There was no contact on the play."
Kaeding came into the season having made 86.5 percent of his field goal attempts, 173 of 200, in the previous seven seasons.
Information from ESPN.com senior writer John Clayton and The Associated Press was used in this report.