Hernandez says his team's 2-1 win at Stoke on October 24 was when he really felt comfortable as a United player.
"There was a game that really made me realise that I could have an interesting season. It was the match against Stoke City in which I scored twice," he said.
"Throughout the match, I felt perfectly at ease in the game. I felt like I had been playing for Manchester United for 10 years!
"Thanks to my team-mates, I could express myself freely on the pitch. I think it was the pivotal game in my season. I will remember it all my life."