Lichaj has been on the books of Forest since 2013 and has been playing well since Freedman took over in February.
However, the 26-year-old defender has been ruled out for the rest of the season following an injury he picked up against Ipswich Town away from home in the Championship on Saturday.
The USA international failed to compete the 90 minutes at Portman Road and was substituted in the 62nd minute.
Freedman revealed after the match that Lichaj will not feature in Forest’s final game of the season against Cardiff City at the City Ground next weekend.
“He felt his groin and unfortunately his season is finished,” the Scot told Forest’s official website.
“Eric’s nearly played every single match this season and it’s catching up with him, as it is with one or two of the players. He’s been fantastic since I walked through the door and we can all take our standards from Eric.”
Lichaj has been a key player for Forest this season and has made 42 appearances in the Championship.
The former Aston Villa star has created 23 chances, has a pass accuracy of 73% and a shot accuracy of 36%, and has won 70 out of 132 tackles.
Forest are currently 12th in the Championship table with 59 points from 45 matches.