Conversation so far:
What happened in Shoaib Akhtar's final years?
Akhtar made a return to international cricket in the shorter format of the game. In May 2010, PCB named him in a list of 35 probables for the Asia Cup.
What was Shoaib Akhtar's rehabilitation for?
Are there any other interesting aspects about Shoaib Akhtar?
In September 2011, Akhtar released his autobiography, Controversially Yours.
Did Shoaib Akthar's autobiography sell well?
The book reached the Amazon Best Sellers Rank: #3,676,115 in Books.
What else did Shoaib Akhtar do during his final year?
In his final year Akhtar was selected in Pakistan's 15-man squad to play in the 2011 World Cup, but during the tournament, he announced that he would retire.

Question: Why did he say that?
Self-contained rewrite: Why did Shoaib Akhtar say he would retire in 2011?