CSKA Moscow head coach Leonid Slutsky has admitted that tiredness was the major reason as to why his side were unable to make the most of their 1-0 half-time advantage over Manchester United in the Champions League last night.
Speaking to UEFA's official website, Slutsky said: "We showed very good quality in the first half. Things were working well for us and we might have gone even further in front. After half-time, though, we didn't manage to play well enough on the counter-attack.
"Looking at it, if you feel fatigue, mistakes happen. Given the current condition of Alan Dzagoev and Roman Eremenko, and Bibras Natcho's injury, we didn't have a player to dictate play in the middle of the park.
"We had to defend a lot and when you do that against a really good team then it's hard to avoid conceding goals. It's a shame but there are reasons why we couldn't continue playing at our best in the second half."
The two sides will meet again at Old Trafford on Tuesday, November 3.