Udinese legend Antonio di Natale has hailed Arsenal forward Alexis Sanchez as one of the most complete forwards in world football, but feels the Chilean could stand to improve on his heading ability.

Sanchez has enjoyed a remarkable first season in English football where he has seamlessly become an integral member of Arsene Wenger's attack, netting 20 goals and providing 11 assists.

The Chile international has proved to be an effective force in both wide positions and coming through the middle since his arrival in north London and during his previous spell with Barcelona.

And Di Natale, who played alongside the 26-year-old in attack for five years before the latter departed for the Nou Camp, rates him as the best partner he has played alongside in his career.

However, the former Italy international feels there is one element of Sanchez's game he could still improve on.

"Alexis is able to do everything, he's one of the most complete attackers in the world: he could play as a winger, as a striker, as an inside forward," the Udinese veteran told Arsenal's official website. "At Udinese, there were even emergencies where he filled in as a midfielder! But that's not to say he can't get better.

"When a player thinks he has no need to improve, he's close to the end, he's destined to be dethroned. Sanchez, on the contrary, has always shown a hunger to get better, and he's always been willing to sacrifice the sweat and tears to do so. I never got the sense that he was satisfied with what he achieved.

"This lack of complacency has helped him to become the star he is, and it is what will help him remain on the top for many years. It's hard to say exactly where he can improve. Like me, he's not a giant: maybe there is scope for him to become a better header of the ball. Maybe..."