Hernandez, known as 'Chicarito', scored on his United debut against the MLS All-Stars in Houston on Wednesday and United boss Ferguson was impressed with what he saw. He believes Hernandez is in a similar mould to United talisman Rooney, meaning the pair might struggle if played together, but the comparison bodes well for Hernandez's prospects of Premier League success.
Ferguson said: "If we are talking about a combination with Wayne, I think we would need to adjust a bit. They are similar types of players. We will assess Hernandez really well and make sure we can bring him to good consistent form. There are still little things to do but not a great deal. One he gets used to our training I think he will be okay.''
Fellow young gun Federico Macheda scored a double in the same match and Ferguson confirmed he would remain at Old Trafford with Hernandez to provide cover and competition for Rooney, Dimitar Berbatov and Michael Owen.
"I need to keep Macheda and Hernandez. There was a lot of purpose in the way they played their football. To play for a club like this is not just about talent. You need something else and they've got something else. I am pleased with that.''
Former United States coach and current LA Galaxy boss Bruce Arena believes United have struck gold by securing the services of Hernandez after seeing the striker score a superb lob after coming off the bench in the emphatic 5-2 victory at the Reliant Stadium.
Arena said: "Manchester United has a global scouting network and they know where all the great players are. They were obviously well aware of this young prospect in Mexico and they did a fabulous job to secure him at the time they did. He is going to have a learning curve and becoming a professional in the environment of Manchester United. One has to believe he is going to be an outstanding player. He certainly has a bright future.''
Hernandez's goal sparked wild celebrations among the 70,000 supporters on hand, hardly surprising given that nearly one million Mexicans live in the Houston area. So his return to previous club Chivas Guadalajara for United's final tour match should be something special.
Hernandez, who will play a half for each side, said: "I don't how I will feel yet but obviously this is an effort by all the people who supported me. From the start of my career I owe everything to Chivas and thanks to them I am where I am now.''