Mark Hughes accuses Karl Wenger of ` ` not knowing how to win '' after a defeat . Wenger has been involved in rivalry with several managers before . He had a fierce rivalry with Alex Ferguson which subsided with Ferguson 's declining fortunes . But his most bitter rivalry has been with Manchester United manager Alex Ferguson . José Mourinho has achieved particular success , especially while at Chelsea .
Mark Hughes accuses Karl Wenger of ` ` not knowing how to win '' after a defeat . Wenger has been involved in rivalry with several managers before . He had a fierce rivalry with Alex Ferguson which subsided with Ferguson 's declining fortunes . José Mourinho has achieved particular success , especially while at Chelsea .