I foresee two possibilities. One, coming face to face with himself 17 years older would put him into shock and he’d simply pass out. Or two, the encounter could create a time paradox, the results of which could cause a chain reaction that would unravel the very fabric of the space time continuum, and destroy the entire universe! Granted, that’s a worse case scenario. The destruction might in fact be very localized, limited to merely our own galaxy and Blake Griffin’s free throw shooting percentage.
Looks very safe.
Hang in there, pal.