The 27-year-old has scored seven goals in the top flight this season for the Gunners, with his manager praising his physical stature as a key attribute of the team's attacking play.
"He is among the best, all of them have different qualities," he told reporters. "He is more of a British/English type striker, he uses well his body and his link play with others [is good].
"His physical presence in the box is massive, especially with the type of team we have, with smaller, technically-mobile players. To have that kind of presence up front is important."
Arsenal are currently top of the Premier League table.