Tim Leiweke will step down as CEO of Maple Leaf Sports & Entertainment on June 30, 2015 or earlier if a successor is found.

“Under Tim’s leadership, MLSE has made a number of key moves to strengthen our organization on the path to championship success,” Larry Tanenbaum, chairman of MLSE, said in a statement Thursday morning.

“We look forward to working closely with Tim to build on this foundation and further accelerate our momentum as we seek a new leader for MLSE.”

Leiweke said in his statement that “it’s an honour to lead MLSE, a world-class organization in a city and a country so passionate about sports.”

“But with new opportunities on the horizon, it’s time for me to begin the transition from sports and entertainment executive to entrepreneur,” Leiweke said.

“Right now, my total focus is here at MLSE and I look forward to working with the board and MLSE team to continue strengthening our franchises while ensuring a smooth transition to a new leader.”

Leiweke told the board it’s his goal to pursue his personal goal of owning his own business.