Obi rose through the ranks in Inter Milan youth academy before Mourinho promoted him to the first-team in 2009.
The midfielder did not play a game for the first team until September 2010 when Rafael Benitez handed him his debut in a Uefa Champions League match against Werder Bremen followed by his Serie A bow against Cagliari in October.
Last season, the former Parma and Torino player enjoyed his most productive campaign in Italy with six goals in 25 games in all competitions under Walter Marrazzi before completing a three-year deal to Chievo this summer.
During his presentation to the media, the 27-year-old described the former Inter Milan coaches as ‘great managers’.
“I have numerous great managers in the past who have taught me a lot,” Obi was quoted as saying by Passione Inter .
“One of the best is Jose Mourinho who promoted me to the first team, then I think of Rafael Benitez who gave me my first team debut. I have to thank them and Walter Mazzarri.
“I look to learn from every coach I have in order to improve.”
Obi made his Chievo debut as a 78th minute substitute in the 3-2 loss to Juventus.