Hernandez scored a goal in each half to give United their first away Premier League win of the season at Stoke on Sunday and could be given another chance to impress in the Carling Cup tie with Wolves on Tuesday night.
United's lack of investment over the summer was one of the reasons behind Wayne Rooney's desire to leave the club last week but the £7million they spent on the Guadalajara striker nicknamed 'Chicharito' is beginning to look like very good business.
Sir Alex Ferguson's side rarely looked at their best at the Britannia Stadium and were indebted to the 22-year-old Mexican's eye for goal.
He opened the scoring with a cute back header and then found himself in the right place to steer home Patrice Evra's cross-shot minutes after Tuncay had hit a superb equaliser for the Potters.
Neville said: "He's [Hernandez] a good person. He works very hard, incredibly hard.
"He's got all the attributes. He'll score lots and lots of goals for Man United.
"When Tuncay scored that goal I thought 'Here we go again we're going to draw another game'.
"It would have been, not a disaster for us, but a real body blow for us. I think in the first half we could have had two or three goals and been further in front.
"But when Chichi scored that second everyone was massively relieved. It's a great three points for us and can hopefully kickstart our away season."
Hernandez has been keen to deflect much of the praise coming his way onto his team-mates.
The Mexican said: "I'm happy and I always say that the goals are all part of the team.
"It is a game about the team. We play with 11 and there are also seven waiting, it doesn't matter who scores.
"The most important thing is that there are no heroes - it's all about the effort of the team and my goals are down to my team-mates.
"They have trust in me, and also the staff. It's an unbelievable opportunity for me to play with the biggest team in the world, Manchester United. I'm working hard because I want to stay here a long time and win lots of trophies."
At Stoke, Neville endured a testing afternoon as he made his 600th United appearance and has admitted that he was lucky not to be sent off.
The former England right-back was booked by referee Andre Marriner for clattering into the back of winger Matthew Etherington and then carved the same player down three minutes before half-time.
The stadium expected red but Marriner let Neville off - much to the displeasure of Stoke boss Tony Pulis.
Neville admitted: "I was lucky not to be sent off.
"I didn't think the first one was a booking - I got the ball - and then with the second one the referee's gone a little easy on me, to be honest."
Ferguson is expected to make changes for the cup tie, with the likes of Tomasz Kuszczak, Anderson, Michael Carrick, Darron Gibson and Chris Smalling in line for a return.