Manchester United defender Phil Jones insists the current players can handle Louis van Gaal's system.
Van Gaal's decision to stick with the 3-4-1-2 system despite United's defensive frailties has drawn criticism.
Jones thinks it was always going to be hard for he and his team-mates to adapt to the new system, but the England centre-back insists he is at ease playing as part of a back three.
"I think we are comfortable playing in it," the 22-year-old said.
"It's a learning curve. It doesn't just happen overnight. You don't just click your fingers and you are used to playing in a formation. It's like anything. But we are improving in training and we want to get better.
"We can have a back four or three. We are comfortable with both.
"Sometimes maybe we play a pass in the defence when we shouldn't but we are comfortable playing in both formations the manager has shown. We are still improving as a team."