Since leaving Stamford Bridge in 2007, Mourinho has spent time at both Inter Milan and Real Madrid, and believes he is now more rounded as he sets himself up for a second spell in the hotseat this season.
During a news conference in Thailand on Friday the 50-year-old also hinted that he would love to bring Rooney to west London.
Mourinho admitted to being a big fan of Rooney, but conceded he remained very much a Manchester United player.
Since arriving at Chelsea earlier this summer, Mourinho has bought Dutch midfielder Marco Van Ginkel, German striker Andre Schurrle and Australian goalkeeper Mark Schwarzer.
Schurrle admitted to feeling the weight of expectation after his transfer, but is determined to deliver.
The first game in charge for Mourinho will be held on July 17 when Chelsea play against the Thai All Stars team in Bangkok stadium.
After Thailand, the current Europa League champions will visit Malaysia and Indonesia.