Long said the offer came on the offensive side of the ball, and he was thrilled with the offer.
"They offered me as a running back and it's no secret they want to run the ball," said Long. "I talked to a lot of the coaches and Coach (Pat) Fitzgerald as well and they all seem like pretty nice guys."
And Long is planning to get to Evanston in April.
"I'm planning to go out there on April 2nd-3rd for their Junior Day," said Long.
The Wildcats were the first to offer but a few other schools are showing interest in him.
"Oregon and Coach (Nick) Aliotti had come by the school a while back and UCLA had been sending me handwritten letters but with the coaching change, I'm not sure how things are there," said Long. "And Stanford is also one I'm really interested in."
In fact, Long has dreamed of playing for the Cardinal for much of his life.
"Ever since I could remember, I wanted to play for Stanford and where the Cardinal red," said Long.
With Northwestern having offered and interest in Stanford, academics are a high priority for Long.
"That's the main thing for me and that's why I consider Stanford and Northwestern," said Long. "Academics are really important to me. I have a 3.7 GPA right now and will take the SAT in the spring."
Long said he's open to leaving the West Coast, though his preference is to stay in the region. But he said he'll go where he fits in best.
"Of course I'd love to stay here," said Long. "My dad said I'll have the option of palm trees or snow men, but either way I'll have a good opportunity. So I'm definitely considering Northwestern.
And Long has a good handle on his recruitment and he knows he won't make a decision until he's fully ready.
"In this last class, you've seen a bunch of guys commit and then decommit. I'm not even about that drama, I'm not trying to drag things out like that," said Long. "When I make my decision, I'm sticking with it."
Long plans to camp at the NUC Combine in March and a Nike Camp.
Last fall, he ran for 1,300 yards and 30 touchdowns.