Arsenal forward Theo Walcott believes 'chilled' Alexis Sanchez's return to form makes the Gunners a more serious threat to opponents.

The Chilean opened his goal tally for Gunners for the current season in some fashion by scoring a hat-trick in the 5-2 win over Leicester City on Saturday.

"Once he scores goals we are going to be more of a threat without a doubt," Walcott told the Daily Mail.

"He doesn't put pressure on himself. He is a very chilled, relaxed man, he always plays with a smile on his face and that's what you want in a team.

"You want players in a dressing room who enjoy playing football.

"He always works hard for the team. If he doesn't score he is always tracking back, always wants the ball.

"He is not scared and doesn't shy away in games.

"The goals are always going to be there. It's just a matter of time and now I am sure he is going to flourish."