The Serbia international started alongside club record signing Paul Pogba in the middle of the park in the Manchester United team for the visit of the Serie A champions.
Matic failed to track Paulo Dybala’s run into the box when the Argentina international seized upon Chris Smalling’s poor clearance to break the deadlock in the first half.
The 30-year-old was wasteful in possession after Matic misplaced nine passes in the 1-0 loss to Juventus to leave the Red Devils winless in their last two Champions League games.
The former Chelsea FC star was fortunate not be further punished when he failed to track two further runs into the Manchester United half but Juve were wasteful in front of goal.
Matic has made an underwhelming start to the season but the veteran midfielder has escaped criticism given that Paul Pogba’s inconsistent performance have dominated the headlines.
Former Liverpool FC captain Souness claimed that Mourinho would been disappointed with the performance of Matic, blasting the Serbian for ball watching throughout the European clash.
“The manager must be tearing his hair out [with Matic],” Souness told Virgin Media Sport during their Champions League coverage in the Republic of Ireland.
“It’s good movement but not great movement. It is very easy to ball-watch and get attracted to the ball. A good central midfielder has his radar on and is aware of everything around him.
“He is ball watching on three occasions. He cost them one goal and it could easily have cost them three goals.”
Matic won the Premier League title and the League Cup during Mourinho’s second spell in charge of the west London side in 2014-15.
The Portuguese head coach signed Matic in a £40m deal from Chelsea FC in the 2017 summer transfer window to add more muscle in the Manchester United midfield.
Matic has scored two goals in 59 games in all competitions over the past two seasons at Old Trafford, scoring his first Red Devils goal against Crystal Palace.
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