The Zimbabwe international has been in red-hot form this term, scoring 17 goals in 19 games for the Ligue 2 side, and he is also attracting Ligue 1 duo Lyon and Marseille.
Kadewere is currently rated £10 million, and it remains to be seen if Celtic will be keen to spend such amount on another striker.
Hoops boss Neil Lennon needs a quality striking cover for Odsonne Edouard in order to boost his side’s chances of winning a ninth consecutive Scottish Premiership title at Rangers’ expense.
The 23-year-old Zimbabwean wants to test himself in the Premier League, though, and he is anticipating offers this month, and that could give Southampton a chance in the race.
Kadewere is proving he knows how to score, and he will definitely be a great addition to the Hoops attack.
However, Edouard remains first-choice, and Celtic won’t be spending that much on a back-up.
Ralph Hassenhuttl wants to lead Southampton to safety, and will look to add to his side’s goals by landing another quality finisher despite Danny Ings’ form.