Cyriel Dessers and Ignatius Ganago found the back of the net as Genk held Lens to a 1-1 draw in a pre-season game on Saturday.
Nigerian forward Dessers joined the Blue and White in June from Dutch side Heracles Almelo, where he shone during his one-year stay with the club.
The 25-year-old won the 2019–20 Eredivisie joint-top scorer award along with Steven Berghuis with 15 goals apiece and had 18 strikes in 29 appearances across all competitions for the club before his departure.
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Dessers has been in fine form since his arrival at Luminus Arena, scoring in their victories over AZ Alkmaar and Excelsior.