The Pole says he admired the Gunners' attacking stars.
The 23-year-old admitted to Tuttosport: “I was an Arsenal fan growing up.
“I really liked Wenger's style of play and I admired champions like Thierry Henry and Dennis Bergkamp.
“I did my 'pistolero' celebration after I scored a goal and then it stayed. Now it represents a lucky charm for me.
“I've seen how people in Italy have gone mad about this celebration. Genoa's a city where I felt good.
“In particular I loved the sea, the mild climate and good food."