Koeman was asked: "Is it unlikely that Jay will return to training this season?"
To which Koeman replied: "It is not unlikely"
Not sure why he wouldn't have simply answered "Yes (it's unlikely)" to the question if Jrod was unlikely to return. As you say, might just be lost in translation.
The club certainly chose not to re-word it when they clarified it on twitter, which you would have thought they'd do if the literal interpretation was wrong...
@SouthamptonFC
Koeman says "it is not unlikely" that @JayRodriguez9 will return to training with #SaintsFC before the season is out.
@danbsfc
@SouthamptonFC @JayRodriguez9 Double negative. Does that mean he will return to training soon then?
@SouthamptonFC
@danbsfc He was asked whether it was unlikely that Jay would return this season. #saintsfc