The shirt read: "Pioneers" and is now available online for $25.
A source close to the Clippers told ESPN that the shirt was first given to players in the preseason, without Griffin's image, to encourage the team to live like those in the photo.
Griffin, 28, averaged 21.6 points, 8.1 rebounds and 4.9 assists per game in 61 games last season for the Clippers. The No. 1 overall pick in the 2009 NBA Draft shot a career-high 76 percent from the free throw line.
Clippers employees wore T-shirt after Blake Griffin's FA meeting likening him to MLK, Obama, Ali, JFK, Lincoln, Gandhi, MJ,Einstein,Mandela. pic.twitter.com/BZtXqhdrWr— Marc J. Spears (@MarcJSpearsESPN) July 1, 2017
The Oklahoma product also made a career-best $20.1 million in salary last season.
League sources told The Vertical that Griffin plans to sign a five-year, $173 million deal with the Clippers. He met with the franchise's front office on Friday night.