The current Manchester United manager lamented because the departure of the Mexican striker in the year of 2015 as he thinks this season he can easily reach the double figures.
According to the Manchester United supremo, Javier Chicharito would have been prolific if he was with the Red Devils.
The Portuguese manager thinks this season if could have reached double figures easily for the Manchester United side.
He voiced: "We have good players, they are creative players, they can create, but they are not the kind of guy that is naturally a killer,"
"I give a simple example — in the way we play at Old Trafford, in the way we dominate opponents, in the way we play in the box, I think Chicharito would have scored 20 goals easy.
"Even coming from the bench for the last 10 or 20 minutes, he would have 20 goals.
"He is the guy that naturally the ball comes here, rebound here, rebounds there, boom, goal.
"The goalkeeper saves, he goes there, boom, goal. The cross is coming, he anticipates the first-post header, goal."
This term only the Veteran striker Zlatan Ibrahimovic reached the double figures for the Manchester United side and Mourinho believes the Mexican striker could have matched if had not been to the German side Bayern Leverkusen in 2015 for £7.3 million.
Mourinho added: "I think Zlatan's number of goals  is a number for every striker,"
"I think all the others, and I am not just speaking about the strikers, I am speaking about the attacking players with freedom, they have to reach always reach a certain number of goals which, when added to them, means a lot of victories, a lot of points, but no-one has reached that level."
This season Hernandez has scored 27 goals in his 51 appearances for the German outfit.