Alexandre Lacazette will become a key figure at Arsenal if they look to “build around” him, says former defender Martin KeownThe French striker has struggled to make a significant impact at Arsenal following his £46.5m from Lyon last year.As a consequence, Pierre-Emerick Aubameyang was brought over to the Emirates from Borussia Dortmund for a club record fee of £56m and has since established himself as the Gunners’ main frontman.But Lacazette has impressed under new manager Unai Emery, despite the majority of his appearances coming from the bench this season.Keown told the Daily Mail: “I think special mention has to go to Alexandre Lacazette.“How patient has that man been? His attitude has been impeccable.“He failed to make the French squad for the World Cup then watched from afar as they went on to lift the trophy in Russia.“Emery used him as a substitute in his first three Premier League matches, then he finally gets to start against Cardiff.“So what does he do? He goes and scores the winner. Lacazette now has to play and be the person they build around. Full credit to him.”?? ALEXANDRE LACAZETTE ??? Angle after angle after angle… pic.twitter.com/cL32ouu7tnVidic: “Ronaldo is the most professional footballer I’ve seen” Andrew Smyth – September 14, 2019 Nemanja Vidic opened up on how a 21-year-old Cristiano Ronaldo’s professionalism left him stunned at Manchester United.— Arsenal FC (@Arsenal) September 5, 2018Although Keown admits that Emery has some more pressing matters to contemplate during the international break.The Spaniard has lost two of his opening four league games in charge of Arsenal.Keown added: “Emery now has his chance to reflect during the international break. This is a period of calm for the new head coach.“If I was in his staff, I’d be saying we need to consider making a change to the system.“Arsenal’s centre-backs Shkodran Mustafi and Sokratis aren’t really the best in possession of the ball.“Emery has very creative players who play further up the pitch but he needs a figure who can sit in deep midfield. Lucas Torreira could be that man and he could then help the back two out.“It can sometimes feel like we’re watching a youth team whose players are trying to be developed into passers.“Manchester City play 4-1-2-3, with a deep midfielder and two creative players either side. That may be the way for Emery to go.”Arsenal will be back in action on September 15 away to Newcastle United.