Cape Town - Jose Mourinho admitted that his Manchester United side are a team full of problems following their 2-2 draw with an in-form Arsenal on Wednesday night.
The Red Devils conceded first to Shkodran Mustafi with David de Gea unable to keep out his powerful diving header, before an immediate response from Anthony Martial at the other end.
A Marcus Rojo own-goal then put Arsenal ahead for the second time, only for Jesse Lingard to poke home an equaliser after the restart.
Speaking after the game, Mourinho told Sky: "We played against a team that is in the top of their season, in the top of their moment where everything goes well for them. That is clearly a team that is on a high, against a team that has so many problems," he said.
"At the top of these problems, during football matches, we shoot ourselves [in the foot]. Today we had a very, very good start, everybody was expecting 1-0 for us - we score. 1-0 for them.
"Then in the second-half our best moment, where Arsenal were clearly trying to stop the game, getting an injury here, an injury there, stop the game again, they were trying to control the game and reduce the intensity of the game. We scored the second goal for them.
"The team had a very good response, had a big soul. We scored four goals and drew 2-2. Even in matches like today where we play well we always shoot ourselves [in the foot]. Sometimes we miss chances with open goals, sometimes we make defensive mistakes, but a fantastic spirit and good performances.
"We feel frustrated with the result, with some mistakes, with some moments where a little bit more quality would be needed."