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Thierry Henry has hailed Alexis Sanchez as Arsenal's best signing in the last six years.

The Chilean has hit the ground running since his summer switch from Barcelona, striking his 16th and 17th goals of the season already in Sunday's 3-0 victory over Stoke.

Sanchez has notched 12 of those strikes in the Premier League, almost single-handedly maintaining the Gunners' Champions League chase.

Henry has been equally impressed with the former Barca man's work off the ball as he has with his finishing.

The Frenchman said: “He’s the best signing in the last six years. Arsenal were looking for a player that can deliver on a daily basis — and they have found one.

In pictures: Arsenal 3-0 Stoke

“He is brilliant, so is his work-rate. He can see the game incredibly as you saw with his part in the Koscielny goal against Stoke on Sunday.

“He scores and doesn’t need a lot of opportunities to put the ball in back of the net."

Alexis Sanchez's Arsenal season 30 Games 18 Goals £37.4m Transfer fee

Henry has also slammed the treatment of Arsene Wenger by a section of the Gunners support after Arsenal's loss at Stoke last month.

Video footage emerged of fans abusing Wenger at Stoke railway station after the defeat, something which Henry labelled a 'joke'.

The Arsenal legend will make his Sky Sports punditry debut this weekend when the Gunners take on Manchester City on Sunday.