Complex sentence: On December 15,2006, Balsillie withdrew his bid to buy the team after receiving notice from NHL commissioner Gary Bettman that the league would negotiate the arena deal on his behalf and the league also wanted the right to take over the team if necessary.
Split into simpler sentences: On December 15,2006, Balsillie withdrew his bid to buy the team. He made the decision after receiving notice from NHL commissioner Gary Bettman that the league would negotiate the arena deal on his behalf and the league also wanted the right to take over the team if necessary.