Chelsea fans should show Jose Mourinho more respect, Ray Wilkins has told Sky Sports.
Wilkins said Mourinho was "No. 1" at Stamford Bridge after winning seven major trophies in two spells with the club.
Sections of the Chelsea crowd taunted Mourinho as his Manchester United side were beaten 1-0 in the FA Cup quarterfinals on Monday.
Mourinho then showed three fingers to the crowd to show the number of Premier League titles he won as Chelsea manager.
Fourth official Mike Jones then had to separate current Chelsea manager Antonio Conte and Mourinho after they had an exchange on the touchline.