Carragher wrote in the Daily Mail: "It was both surprising and very disappointing to hear David Moyes was subjected to almost constant abuse from Everton’s fans at Old Trafford on Wednesday.
"I understand that emotions were running high. I also understand Evertonians have been unhappy with some of the things Moyes has said since he left Goodison Park, not to mention angered by the aggressive pursuit of Marouane Fellaini and Leighton Baines.
"But those same fans should stop and think about what type of club they supported before Moyes arrived on Merseyside in March 2002. He transformed things, gave them back their pride and turned Everton into a team that regularly finished in the top seven and qualified for Europe."
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