NBA star Derrick Rose, who has been hampered by injuries over the past six years, has left the Cleveland Cavaliers to spend some time thinking about his future, ESPN reported.

It has been days since Rose, the 2011 NBA MVP,  left the team and so far there is no clear information as to when the 29-year-old is coming back, the network said on Friday.

Rose missed 11 games in the 2017-18 NBA season, including the last seven because of a left ankle sprain. ESPN quoted a Cavaliers source as saying that Rose is tired of the injuries which have also hurt him mentally.

Tyronn Lue, the Cleveland head coach, said a week ago that Rose will at least miss all the games in the coming two weeks. 

In an interview on Friday about Rose's departure, Lue said that there's no schedule as to when Rose must return. "He (Rose) can take all the time he needs to deal with his personal affairs," the coach said. "We just want him to know that our team stands behind him and hopes he can get better."

Lue also said he believes that Rose will come back.

This is not the first time that Rose left his team. He departed the New York Knicks last season without permission and missed one game. The Knicks fined him for his action. Rose came back the next day and apologized to his teammates. "This is family stuff. It has nothing to do with the team or basketball. For the first time in my life, I felt that I need to spend some time with my family," explained Rose at that time.

If Rose retires this season, he will lose about 80 million US dollars of income from Adidas which signed a 13-year contract worth of 185 million US dollars with him in 2012. This contract will still be effective for the next seven years. 

Selected by the Chicago Bulls with the first pick in the 2008 NBA Draft, Derrick Rose took Rookie of the Year in 2009, entered NBA All-Star in 2010, and became the youngest NBA MVP in history (the second MVP for Chicago after Michael Jordan) in 2011 by taking 25 points and 7.7 assists per game and leading the Bulls to 62 wins in that season (also the first time for Chicago since Michael Jordan retired in 1998).

The league even made the "Rose Clause" after his marvelous performance: Within a player's rookie contract, if he becomes NBA MVP, or enters the starting-five of NBA All-Star Weekend twice, or enters NBA All-Team twice, this player can sign a second contract with a maximum salary that takes 30 percent of the salary cap.

However, Rose has been suffering from injuries since then. He missed the rest of the 2011-12 play-off after the first game with the Philadelphia 76ers on April 28, 2012. Rose then missed the entire 2012-13 season. He played 10 games in the 2013-14 season before injury forced him to quit. After two relatively healthy seasons, Rose was traded to the New York Knicks and missed the rest of 2016-17 season from April 3, 2017. He signed a 2.1-million-dollar one-year contract with the Cavaliers on July 24, 2017 but has played only seven games so far in the new season.