Manchester United have decided against appealing the red card, meaning the Frenchman will be suspended for the Manchester derby at the weekend.
"Of course, he's a bit exhausted because it was a huge match at the weekend and just two days to recover for CSKA", Mourinho said at a press conference when asked if Pogba would feature.
A awful injury early on in his fledgling Red Devils career put plans on the back foot and since his recovery there have been rumours of a struggle to keep weight down and a poor attitude have followed the England defender around. The ESPN FC crew identify the catalysts of Manchester United's free-flowing play in their 3-1 victory against Arsenal.
'De Gea is third best right now' David de Gea made 14 saves in the game against Arsenal, the joint-most in a Premier League game since 2003-04, when Opta started collecting this data.
He said: "Romero is the best because he plays and my goalkeeper is always best in the world". So now David is the third best.
The boss later told reporters that Sergio Romero will start against CSKA Moscow with Joel Pereira on the bench as our back-up goalkeeper, providing David De Gea with a well-earned rest following his heroics against the Gunners at the Emirates Stadium on Saturday.
Speaking to MUTV at the Aon Training Complex on Monday, the boss confirmed Nemanja Matic is definitely injured and unavailable for Tuesday night's European tie at Old Trafford.
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"I'd have to think", the manager said.
"I am going to make a few, but not too many, changes", Mourinho said. We didn't qualify yet.
"But when we speak about Luke Shaw, he's working to have an opportunity and sooner or later that opportunity will arrive because he deserves that opportunity".
"Selected for tomorrow, yes for sure".
In a seeming reference to Arsenal fielding Alexandre Lacazette against his team despite Arsene Wenger ruling him out of the match earlier in the week, Mourinho even hinted at producing a selection surprise of his own.
CSKA's slim chance of reaching the next phase requires them to beat United as a first point of order, though Basel's result at Benfica and goal difference also have a part to play. He [Pogba] plays tomorrow.
Porba will be eligible for Tuesday's Champions League match with CSKA Moscow and can return in the Premier League Dec. 23rd against Leicester City.