Complex sentence: Both the Canadian teams were hampered by the NBA's decision to deny then a one of the top five picks in the draft, and the teams would not be allowed a top draft pick in the following three season, even if they should win the lottery.
Split into simpler sentences: Both the Canadian teams were hampered by the NBA's decision to deny them one of the top five picks in the draft. The teams would not be allowed a top draft pick in the following three season, even if they should win the lottery.