The 24-year-old French forward was with Paris St Germain as a youngster and has also had spells with Lorient and Angers.
Well boss Stephen Robinson told the club website: "He is four to six weeks away from getting to fitness. When he does, we feel he will be a big addition to our forward line.
“He has played a lot as a number nine, but he can also play on either flank. He’ll bolster our options and add even more pace and power to our forward line.”
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