The forward is known to be able to play across the front line, but will likely be deployed in the right-wing position for the 'Terriers' should the deal materialise.
A Belgian U-21 international, Mbenza joined his current club from Standard Liege in 2017 and became a regular from the moment he arrived.
He continued to impress last season, scoring 8 times in 38 appearances for the French outfit in 2017-18.
David Wagner is keen to add Mbenza to the squad as a replacement for Tom Ince who left the Yorkshire club to join Stoke City earlier in the transfer window.
The winger will become the seventh signing to join the club this summer if his move is successful, as Wagner looks to maintain the side's Premier League season for a second season.