Paulo Dybala's 17th-minute effort capped the Serie A giants' dominating display as the Red Devils struggled to salvage a share of the spoils at Old Trafford.
Massimiliano Allegri's side sit at the summit of Group H with nine points from three games.
And the 44-year-old who played for the Old Lady during the 1999-2000 season has tipped them as favourites to win the elite European competition with special praise for midfield duo Blaise Matuidi and Miralem Pjanic.
"Totally unwise to bet against C. Ronaldo and Juventus in this Champions League," Oliseh tweeted.
"Just simply, completely solid and full of creativity. 3 games played, 2 away but 9 full points.
"Blaise Matuidi and Miralem Pjanic were just outstanding!"
Totally unwise to bet against C. Ronaldo & Juventus this Champions league. Just simply Completely solid and full of creativity. 3 games played,2 away but 9 full points. Blaise Matuidi & Miralem Pjanić were just Outstanding!! pic.twitter.com/ZHtunTQLHx— Sunday Oliseh (@SundayOOliseh) October 23, 2018