I'm going with Rich Kelley.
Kelley always looked disheveled and wasn't pretty to watch, but he was pretty effective as a player. One of the best backup centers in the league at the time.
Coming out of high school Kelley was pretty highly recuited and was offered a scholarship to UCLA, but they already had Bill Walton so he decided to go to Stanford instead and was third team All-American his senior year.
Kelley was the 7th pick overall by the Jazz in 1975 where he was a teammate of Pete Maravich and Truck Robinson. in 1979 he was traded to New Jersey for Bernard King and two other players in a lopsided trade....... in the Nets' favor (King's time with the Jazz was a nightmare).
After a half year in New Jersey, the Suns picked him up in a trade. Colangelo (and the Suns ownership) didn't much of a problem with picking up players with hefty contracts (like Kelley, Robinson, James Edwards, Maurice Lucas) in order to find a big man who could help shed the "finesse team" label.
