Booker tweeted a photo Friday night of Towns wearing a No. 1 Suns jersey (Booker's number). He posted a sly looking emoji for the caption.
Towns and Booker played together on the 2014-2015 Kentucky Wildcats squad, which went 38-1, losing in the Final Four to Wisconsin.
LaVine crossed out Suns and wrote Bulls. He also wrote his No. 8 over Booker's No. 1. He included a sly looking emoji and a thumbs up for his caption.
Towns, 22, made his first All-Star team in 2017. He averaged 21.3 points, 12.3 rebounds, 2.4 assists and 1.4 blocks per game for the Timberwolves. Towns has started every game for the Timberwolves since being selected with the No. 1 overall pick in the 2015 NBA Draft. He is due $7.8 million next season and has a $10.1 million qualifying offer for the 2019-2020 campaign.