Potential rejection is part of forming adult relationships.
You won't know how he feels unless you find out.
The best way to minimise the potential rejection is to take things very slowly.
Ask him for coffee, or to the pictures, or a concert.
While you are there, read his body language and reactions, and get a feel for how he is reacting.
Guys are useless at hiding their interest, if he wants to get into something more than a friendship, you should be able to see the signs.
Good luck.