Arsenal boss Arsene Wenger has paid tribute to the 20-year reign of his great rival, Manchester United's Sir Alex Ferguson.
Wenger has been in charge of the Gunners for a decade, but his tenure is dwarfed by that of Ferguson, who took the helm at Old Trafford way back in November 1986.
Wenger said: "I have seen half of those years from very close up.
"What his legacy will be, I do not know, but it is a tremendous achievement.
"When you think that the average life of a manager is one year and seven days, and somebody has done 20, it is remarkable consistency.
"It is a remarkable achievement, unique. A unique one in Europe at the top level.
"No-one could say the opposite. It needs tremendous motivation and tremendous stamina and he has that."