West Ham United boss Sam Allardyce has hailed the career of Manchester United manager Sir Alex Ferguson following his announcement that he will retire of the end of the season.
The Scot will call time on his 27-year tenure at Old Trafford after his side's game with West Bromwich Albion on the final day of the campaign.
"What a fantastic career he's had for Manchester United and for Aberdeen, and for places like that," Allardyce told Sky Sports News.
"What an outstanding job he's done. It's unlikely we'll see anybody of the likes of Alex Ferguson as a football manager lasting so long ever again.
"He took on the mantle where Sir Matt Busby left off and probably achieved even more than that. It is just an outstanding achievement for him and everybody at Manchester United, and of course his family."
During his time at United, Ferguson won 13 Premier League titles, two Champions League trophies and several other domestic honours.
