It took English till his 5th year in the league, aged 26, and being traded to Denver before he averaged over 20 pts a game.
Until then he was a 14-16 pt. scorer on very good shooting. If Porter goes to another team he's immediately an 18-20 pt scorer at age 24. There's plenty of room for growth. It's just the closest comparison I could come up with. Alex English but better D.
You're welcome for the enthusiasm.