Grobbelaar - who made 628 appearances and won 13 major trophies during his career with the club - will be signing autographs at the stadium's club store from 11.30am GMT.
The former stopper will be available for 90 minutes and signings will take place on a first come, first served basis, so arrive early to avoid disappointment.
Grobbelaar's new autobiography, Life in a Jungle, can be purchased in store or online now.