Booker joined ÍR in January 1991, and in his first game he set a Úrvalsdeild record when he made 15 three-point shots.

[8] He joined Valur at the start of the 1991–1992 season and led them to the 1992 Úrvalsdeild finals, where the team lost to Keflavík, 2–3, after holding a 2–1 lead in the series.

For the season Booker averaged 15.5 points per game, leading the club to the second best record in the league,[11] and helping it to win the 1995 Icelandic Basketball Cup.

Grindavík claimed Booker had become disgruntled and disinterested after being denied by the team to participate in the All-Star game in February, due to him missing practices the same week because of a back injury.

[13] Booker responded that he was deeply disappointed by the dismissal and the allegations but wished the club all the best in its upcoming games.

[16] To further fuel the argument between the two parties, Booker requested that the club paid him bonus for it getting to the quarter finals as was stated in his contract.