Arsenal still missing a world class striker?

Arsenal have been busy in the transfer market as they look to defend their Premier League title. But the question lingers: do they still lack a world class striker? It is a risk some fans think they are taking. The squad has depth in most areas, yet the frontline still looks short of that game-changing presence in front of goal. No deal for a top forward has come through so far. Whether that costs them in the title race remains to be seen.