Mark Robins has slammed criticism of Manchester United as the Coventry boss insisted his troubled former side are still the world's biggest club ahead of Sunday's FA Cup semi-final.

Robins began his playing career with United and famously scored the FA Cup third round winner against Nottingham Forest in 1990 that is often credited as saving Alex Ferguson from the sack. United's current manager Erik ten Hag is also battling to hold onto his job after a difficult second season for the Dutchman.