The Manchester United manager led Inter to the Treble in 2010.
Before the Champions League triumph, Inter won the Scudetto with a hard-fought victory away to Siena.
“Straight after the game with Siena, I was looking for Mourinho and couldn't find him anywhere," revealed ex-director Tronchetti Provera.
“He had completely disappeared. In the end, I found him lying down in tears on the team bus, on his own. He was completely burnt out.
“We won the Champions League really in the semi-final with Barcelona. We went into the Final calm and confident, because we had already achieved something extraordinary.
“That was where we realised we could win the Champions League, with the roar of the San Siro crowd."