He signed here for five years and still has three years left on his contract," the former Manchester United manager replied. In fact, without Xhaka, Tah, Wirtz and goalkeeper and captain Lukas Hradecky -- who joined AS Monaco last week -- the Werkself lack a certain maturity, grit and composure. The Dutch manager is determined to rebuild his image following a turbulent two-and-a-half year stint in charge of Manchester United. "It is not about Manchester United. Federico Gambarini/picture alliance via Getty ImagesGoing from Manchester United to Bayer Leverkusen may feel like a return to where he was most successful.