Hernandez was frequently forced to be content with a place on the substitutes' bench during David Moyes's spell at the club, and that resulted in 'little pea' scoring just four goals during the Premier League last season.
However, despite the Mexico international ending an 11-game goal drought for his country against Croatia on Monday evening, he has revealed that he has found it tough during the last 12 months of his career.
The 26-year-old is quoted by FIFA.com as saying: "This whole year has been very tough. Players need confidence more than anything else and I've been very short of it.
"Very few people have shown faith in me over this past year."