BERLIN, April 29 (Xinhua) — Bayern Munich is set for major managerial changes. Oliver Kahn will officially take over the chairman’s job from Karl-Heinz Rummenigge by the end of 2021.

Behind the scenes, the former Germany keeper’s growing influence came to light when the 51-year-old initiated the process to find a coach to follow Hansi Flick, and one to solve the team’s defensive frailties.

The Bavarian icon not only managed to convince Europe’s most promising coach such as Julian Nagelsmann to sign a 5-year-contract starting in the lead up to the 2021/2022 season.

Bayern has never before given a similar vote of confidence to a coach. Star coaches such as Pep Guardiola and Carlo Ancelotti only were provided with three-year contracts and Louis van Gaal and Jupp Heynckes two.

The 33-year-old comes amid the hope to solve the problem that made the 2020 treble winner fail in the German Cup against a second division Kiel and exit in the Champions League quarterfinals only a few months after the club’s remarkable achievements.

Nagelsmann’s teams stand for a unique tactical variability. At his current employer RB Leipzig, the young coach used 7 different systems turning the defense into the league’s best.

Last season the Champions League underdog reached the semifinals, often changing its tactics during the 90 minutes.

Leipzig has let in 15 goals fewer than the reigning German Champion in the league. Bayern’s departing coach Hansi Flick failed in his attempt to create a solid defense.

Gaps at the back were responsible for Bayern failing when it matters. Two goals in the cup defeat against Holstein Kiel and three against Paris in the Champions League were instrumental in the club failing to match last season’s achievements. All they could manage was the league championship win.

Opponents had worked the Bavarian’s approach. While Flick continuously counted on a back-row of 4, Nagelsmann changed his back row from 3 to 5 depending on the situation.

Flick’s 4-2-3-1 system won’t always be Nagelsmann’s first choice. In Leipzig, he counted on a midfield diamond, a double 6, or a formation with 2 strikers.

“He manages to lift teams to a new level you don’t expect,” Bayern forward Robert Lewandowski said.

Bayern’s president spoke about the new arrival, having convinced the club with his innovative approach. Herbert Hainer called the new manager a perfect match addressing the team’s requirements regarding an aggressive offensive game, high pressing, and possession football.

The record 25-million-euro transfer fee, Bayern paid to Leipzig strengthens the coach’s position on his way to expanding Bayern’s tactical options.

After players complained about being overloaded with tactical advice in his early years in Hoffenheim, Nagelsmann has learned to follow a more patient path.

While Flick entirely counted on experienced players, Nagelsmann is keen on opening doors for talents that address Bayern’s demands to increase the development of youngsters bred in the club’s academy.

If Nagelsmann does succeed, it not only won’t be good news for national competitors but international rivals.