Yann Karamoh is still going to remain at Bordeaux until the end of the season, after which, as per his contract, he will return to Inter where his future will be decided.
In fact, at the end of the season, the two year loan with the right of redemption in the hands of the Nerazzurri will expire. If Inter decide to redeem the player, he will be present at the start of the new season, according to FcInterNews.
Today, the situation looks like this that, Inter will redeem Karamoh according to the report. In fact, a contract has already been signed that will expire in June 2021, which could be adjusted.
Therefore, it is not conceivable that there was an extension without a redemption being almost guaranteed. A lot will be decided based on what happens on the pitch and what situations arise. This is the current scenario but the details will be defined towards the end of the season.