Per Mertesacker has revealed that Arsene Wenger is not showing any signs of tiredness and is going as fresh as ever, in spite of being the oldest manager to currently ply his trade in the Premier League.
The Frenchman will turn 66 this year and has two more years left in his current contract with the Gunners, which is expected to be his last.
The Gunners have qualified for the Champions league for the 19th time under his guidance and have also qualified for the finals of the FA Cup, where a win will make Wenger the most successful manager in the FA Cup of the modern era with six triumphs.
When asked if the manager is showing any signs of tiredness, Mertesacker said, "Not at all. And it is not like he sticks to his old methods. He changed some things by bringing in new players and by changing his behaviour.
"He changed his coaching staff, he acquired some fresh, young people. The video analysis has changed. In the summer, Shad Forsythe came in from the [Germany] national team as the new fitness coach.
"Those are examples that prove that he is open to new things and that he takes advice. One of his strengths he has never lost in all those years: his charisma. He is calm center of it all - that's what he brings across."
The defender also allayed fears about Wenger's tenure at the club, with the manager put under massive pressure after their 3-2 loss to Stoke at the Britannia Stadium last year. However, the Gunners have made a complete turnaround from their shock defeat and after winning eight on the trot, the maximum by a team this season, have secured themselves a third place finish.
"I have witnessed it several times that there were questions about the manager in public," he told Kicker.
"That is quite normal at a club that goes for the league title. But we responded well with some results. By doing so, not only the team but also the coach is in a much better position," he concluded.