The 28-year-old has been at the League One outfit since 2017, when he joined them from Brighton & Hove Albion who he had spent all his permanent career at beforehand.
After a promising start to life at The Valley, Forster-Caskey missed the majority of the 2018-19 season with a serious knee injury and then did not feature much at all in the Championship the following campaign.
Quiz: Which club did Charlton Athletic sign these 24 players from in the 1990s?
A return to form though came in the 2020-21 season back in League One, but after 34 league appearances, Forster-Caskey then picked up another knee injury.
It’s an injury that kept him out for most of the 2021-22 campaign and he only made his return at the beginning of April – his struggles meant he was restricted to just four outings for the Addicks.
Unless Charlton make a decision soon though then it appears that Forster-Caskey will be departing the club, and he believes that wherever his future lies he can prove that he’s one of League One’s top midfielders if he can stay fit.
“I’d have loved to have played a bit more but I’m really happy I’ve come back and feel like I’ve influenced a few games, even though there were some tricky ones I came on in,” Forster-Caskey said at Charlton’s end of season awards, per the South London Press.
“I’ve got six weeks to take the weight off my shoulders and go again next season.
“I’ve had no conversation (about his contract situation), so I don’t really know.
“The club have got a clause but I don’t really know what the future holds, I can’t say either way.
“I’m looking to get myself in the best shape possible over the summer and kick on next year, wherever that may be. I believe I’m one of the best in this division.”
Forster-Caskey has had a rough time of things when it comes to injuries, and there’s a chance that two serious knee problems in the space of three years could take its toll on the central midfielder.
He will be looking to prove people wrong though and get back to playing week in, week out in 2022-23.
That won’t be at Charlton though if they don’t choose to extend his contract, and they’ve now got a couple of weeks to make their decision.
It will be a tricky one for the hierarchy to weigh up as whilst Forster-Caskey is clearly technically a good player, the knee issues may be something that are hard to ignore.