However, your weekly, men's day event would not be considered a recognized amateur event. If the men's association at your local club chooses to allow him to play, that's fine. He should not be required to play the back tees unless everyone else is playing them as well. He should use his handicap and play the same course everyone else is playing. Your club pro's job is to make golf enjoyable for others, not to be a good golfer.
Good golf is what touring professionals do.
He shouldn't be penalized because he makes his living in the golf profession.