Amavi has been one of Villa’s best performers over the early part of the campaign, but the left-back ruptured his anterior cruciate ligament while on international duty.
And Richards says that it is a set-back for Villa, as he feels Amavi has been one of the best signings the club made during the summer transfer window.
"As captain of the club I've also got to make sure Jordan has got everything he needs," Richards said.
"It's just a shame that one of the best signings we've made this season is out with an injury but hopefully he'll come back stronger.
"The news that he is out for the rest of the season was really tough for the team and for Jordan himself.”
While many of the Villians’ summer signings have taken a while to adapt to English football, Amavi looked perfectly suited to playing in the Premier League.
The 21-year-old looked lively, and he offered a genuine attacking threat down Villa’s left-hand side.
His injury has come at a terrible time for the club, as Remi Garde needs all his key players fit and in form.
If Villa are to get out of trouble, they will have to improve dramatically – as they are already seven points away from safety.
The Midlands club are winless in their last 13 Premier League matches, and only a serious up-turn in their performance levels will get them out of trouble.