Complex sentence: Also, in 2012, Klarberg teamed up with client Justin Timberlake and joined the ownership group for the NBA Memphis Grizzlies, NBA.com but has since relinquished all ownership in any sports team and was also fired by Timberlake.
Split into simpler sentences: Also, in 2012, Klarberg teamed up with client Justin Timberlake and joined the ownership group for the NBA Memphis Grizzlies. He has since relinquished all ownership in any sports team and was also fired by Timberlake.