In January 2018 he received a scholarship to join the University of Utah one year later in 2019. Lennon was born to parents Stephen and Lesley. He has two sisters, Kara and Grace. Lennon's sister Grace is a professional golfer. During the 2014 pre-season period Lennon starred in an AFL Media documentary called "Draft Days." The documentary follows the progress of three players who are childhood friends and striving to be a part of the AFL draft. The other players are Jack Billings drafted by St Kilda and Luke McDonald drafted by North Melbourne.