Amorim has been vocal about getting the players on his side and buying into his philosophy.
After a battling 2-1 win over Manchester City, in which United scored two late goals, Martinez acknowledged Amorim’s spirit.
“He’s been working really well,” said the Argentina centre-half to reporters.
“I think he demands what the club demands, which is good. I like his passion, his energy, the way he wants to play in possession and defending. And also the staff, the energy around the team. It’s all good.
“His way is the way I like to play - the passion, the energy you know.
“If you have that with me, it’s like you connect quickly. So the coach has brought many good things and, yeah, that’s good for everyone.”
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