"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", said Mourinho. When the hard work starts and fatigue comes, for that period of time he can not play for these days.
United need a point against Russian side CSKA at Old Trafford on Tuesday to be sure of topping Group A in the Champions League.
At the weekend, Matic played the full 90 minutes - despite being rated as doubtful - as United ran out 3-1 winners over Arsenal at the Emirates Stadium. "But he's very happy to play and to try to keep his momentum because since he was back from injury, he's been phenomenal", Mourinho explained. He is in a cycle of work, in the gym and on the pitch.
De Gea was in stunning form against Arsenal but, for one night only, Mourinho joked De Gea will only be the third best goalkeeper in the world on Tuesday.
Sergio Romero is set to start in goal ahead of David de Gea, whose heroics on Saturday contributed greatly to the win against Arsenal, while Joel Pereira will take a place on the bench as understudy.More news: GM plans large scale launch
"I am going to make a few, but not too many, changes", Mourinho said. He plays tomorrow. Of course, he's a bit exhausted because it was a huge match last weekend and just two days to recover for CSKA.
But he will give Luke Shaw the chance to put himself in the shop window.
"We didn't qualify yet, we didn't finish first in the group yet, there are other clubs also involved in qualification and I need to keep a certain balance in the team".
The Red Devils have won their last 13 matches played at Old Trafford and are hot favourites to win with Bet365 at the price of (1.40).