Arsene Wenger says that he is well aware of M'Baye Niang's ability ahead of Arsenal's game against Watford, revealing that the forward had a trial with the Gunners.
Watford completed the loan signing of AC Milan forward Niang last week and Wenger has warned his side to be alert against the 22-year-old if he makes his debut on Tuesday.
"I know Niang well because he played for Caen and we had him here [on trial]," Wenger told a news conference. "He's a very talented striker individually, and he can create chances.
"He's very strong as well physically, and very quick. I think he will be a major asset for them.
"He's on loan from AC Milan and we have to keep him quiet because he's a guy who can do something special."
The winger had made just 13 league starts for the San Siro side this season, scoring three goals, but will now look to revive his career in the Premier League.