It'd be appreciated, but I don't know if he'd get that message. I got messed up in a car crash years ago, and this girl I hardly knew visited me two or three times while I was in hospital.
I ended up going out with her about a year later, and she told me that she was trying to drop hints at that point.
Mind you, I never was good with subtlety. I'd say go and visit the guy, take him some grapes and Lucozade and just sit and chat for a while. Worse comes to worst he'll think nicely of you.