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well, that's a pretty difficult one, but even though you never knew him, I dunno if I would ignore the opportunity to get to know him, if you're interested that is.
If you're asking simply because you don't know if it's a good or bad idea, I'd say it couldn't really hurt to do it

but, if you're maybe just a bit nervous about giving him a call, then, how about getting your mom to call him and then after she talks to him, you talk to him, maybe make the introduction a little easier.
I bet you're a bit nervous to just call him, so it could be easiest to just get your mom to call and then introduce you to him and such via the phone

but, yeah, I don't think it's a bad idea to talk to him if you're up for it
