The new AC Milan boss claims he spoke to the Chelsea manager about the striker's attitude before sanctioning the two-year loan move.
The Spain international was an indisputable flop at Stamford Bridge following his then-British record transfer from Liverpool and the new San Siro coach was concerned that it might be because of a mentality issue.
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However, the Portuguese gave him assurances that the 29-year-old's attitude is impeccable and it paved the way for his two-year loan move to Milan.
"I spoke to Mourinho, as I wanted to ask him how Torres was," Inzaghi told reporters on Saturday following confirmation of the deal on Friday. "I wanted to check what he was like behind the scenes and his general attitude. From the outside he already seemed to be a good professional. Those suspicions were confirmed. We thought Torres was a player who could give us a helping hand. I sought information on his approach to training and his attitude.
"When Mourinho told me that he is always the first to arrive at the training ground, I had no doubts in giving the all clear. What the player is like as a man is fundamental and comes before everything on the pitch. We’ll get Torres back to being the player he once was."
Milan opens its Serie A campaign at home to Lazio and Inzaghi, who replaced Clarence Seedorf in the hot seat this summer, believes that the Rossoneri can be the shock package of 2014-15.
"I am very confident for this season," he added. "This peace of mind is down to the fact I have seen the team training well. We want to be the surprise of this Serie A season."